In the US a trillion comes after a billion. In other countries, a billion is called a milliard and a billion would be equivalent to a trillion in US terms.
Millions, billions, trillions.
A billion and one.
a billion and one
9 billion and 1.
1 billion and one
Ok first, 1 zillion is not a number, people just made that up. Second, the number that comes after on BILLION is two billion.
a billion one
trillion
1,000,000,001
trillion
Quadrillion
quadrillion.
999,999,999