# Trillion (disambiguation)

Trillion may mean:

## Numbers

Either of the following two numbers (see Names for large numbers for more information):

• 1,000,000,000,000 (one million million; ${\displaystyle 10^{12}}$; SI prefix: tera-) – for all short scale countries – now used in most English language countries.
• 1,000,000,000,000,000,000 (one million million million; ${\displaystyle 10^{18}}$; SI prefix: exa-) – for all long scale countries – not used much in English language countries but often used in many other languages.