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.
11
11
There are 11 of 0 (zeroes) 500,000,000,000
There are 10 digits in a billion.
10 digits: 1,000,000,000 is one billion dollars.
10 digits
13 digits.
There are 10 digits in a billion.
there are 12 numbers for billion
they have 10
10
If you mean how many digits does a billion have, then one billion = 1,000,000,000 which is one, followed by 9 zeros, or ten digits