If your asking in a digit it's called a 4 digit number and it is the smallest 4 digit number
It is called a 28-digit number!
A 22 digit number is called a quintillion.
Just that - a 26-digit number. There is no special name for that.
100 quintillion is a 21 digit number with 20 zeroes.
If your asking in a digit it's called a 4 digit number and it is the smallest 4 digit number
It is called a 28-digit number!
It is called a twelve-digit number. Its exact name will depend on the number.
A 22 digit number is called a quintillion.
Calling it "17-digit number" is just fine.
I suggest you just call it that - a "35-digit number".
I would just call it a "400-digit number".
The value of a digit in a number is called its place value.
21 and 20
We generally refer to them by the number of digits. Two-digit number, three-digit number, etc.
21, for example.