How many digits is a billion?

Answer 1

It depends on what country you are in. The 'short scale' system, used in the United States, UK and some other countries has billion = 1,000,000,000 (nine zeros). The 'long scale' system used in many European countries has billion = 1,000,000,000,000 (twelve zeros). See related link for information about billion and other names for large numbers.