en.wikipedia.org/wiki/Names_of_large_numbers

Some names of large numbers, such as **million**, **billion**, and **trillion**, have real
referents in human experience, and are encountered in many contexts. At times,
the names of large numbers have been forced into common usage as a result of
hyperinflation. The highest numerical value banknote ever printed was a note for
1 ...

www.thoughtco.com/zeros-in-million-billion-trillion-2312346

**Hundred**, 2, (100). **Thousand**, 3, 1 (1,000). Ten **thousand**, 4, (10,000). **Hundred**
**thousand**, 5, (100,000). **Million**, 6, 2 (1,000,000). **Billion**, 9, 3 (1,000,000,000).
**Trillion**, 12, 4 (1,000,000,000,000). Quadrillion, 15, 5. Quintillion, 18, 6. Sextillion,
21, 7. Septillion, 24, 8. Octillion, 27, 9. Nonillion, 30, 10. Decillion, 33, 11.
Undecillion ...

www.statman.info/conversions/number_scales.html

1,000,000,000,000,000,000, exa, E, Quintillion, **Trillion**. 1,000,000,000,000,000,
peta, P, Quadrillion, **Thousand Billion**/Billiard. 1,000,000,000,000, tera, T, **Trillion**,
**Billion**. 1,000,000,000, giga, G, **Billion**, **Thousand Million**/Milliard. 1,000,000,
mega, M, **Million**, **Million**. 1,000, kilo, k, **Thousand**, **Thousand**. 100, hecto, h,
**Hundred** ...

mathforum.org/t2t/discuss/message.taco?thread=679&n=8

1 one 10 ten 100 **hundred** 1.000 one **thousand** 10,000 ten **thousand** 100,000
**hundred thousand** 1,000,000 One **million** 10,000,000 ten **million** 100,000,000
**Hundred million** 1,000,000,000 One **billion** 10,000,000,000 ten **billion**
100,000,000,000 **hundred billion** 1,000,000,000,000 one **trillion** etc. The pattern
one, ten, ...

www.math.com/tables/general/numnotation.htm

**billion**, 1,000,000,000 (a **thousand** millions), 1,000,000,000,000 (a **million**
millions). **trillion**, 1 with 12 zeros, 1 with 18 zeros. quadrillion, 1 with 15 zeros, 1
with 24 zeros ... 0.234 = 234/1000 (said - point 2 3 4, or 234 thousandths, or two
**hundred** thirty four thousandths). 4.83 = 4 83/100 (said - 4 point 8 3, or 4 and 83 ...

2000clicks.com/Graeme/LangNumbersMillionsAndBillionsAndZillions.htm

Millions, **Billions**, and Zillions ... 9, 1, 000, 000, 000, **Billion**, **Thousand Million**, or "
Milliard". 12, 1, 000, 000, 000, 000, **Trillion**, **Billion** ... one **trillion**, three **hundred**
thirty-five **thousand billion**, one **hundred** sixty-eight **billion**, seven **hundred** thirty-
six **thousand million**, seven **hundred** ninety-seven **million**, one **hundred** thirty ...

www.theguardian.com/notesandqueries/query/0,5753,-61424,00.html

Not sure about this, but I think the British equivalent, now redundant, of the US
**billion** (one **thousand million**) was a milliard. The British **billion** would have been
one **million million** - the same as the US, and now universal, **trillion**. Dave
McNamee, London, England. Never - 100,000,000 is one **hundred million**. The
American ...

en.oxforddictionaries.com/explore/how-many-is-a-billion

British English has now adopted the American figure, though, so that a **billion**
equals a **thousand million** in both varieties of English. The same sort of change
has taken place with the meaning of **trillion**. In British English, a **trillion** used to
mean a **million million million** (i.e. 1,000,000,000,000,000,000). Nowadays, it's
generally ...

blog.oxforddictionaries.com/2014/12/09/psy-youtube-quintillion

Dec 9, 2014 **...** Next up is **billion**, which makes fewer cameos in our everyday lives, though it still
appears in discussions on finance and world population. (Although the British
and American definitions of **billion** used to differ, it is now widely understood to
mean 'a **thousand million**'.) Above that, **trillion** is reserved mostly for ...