A 21-digit number is typically referred to as a "twenty-one digit number." In the context of numerical systems, it can also be classified as a large integer or a specific type of number depending on its properties (like if it's a Prime number or part of a specific sequence). In some contexts, particularly in finance or computing, it may also be associated with identifiers like account numbers or tracking codes.
sum
A rational number
21 and 20
A 400-digit number is typically referred to as a "400-digit number." In mathematics, numbers are categorized by their number of digits, such as single-digit numbers, double-digit numbers, triple-digit numbers, and so on. Therefore, a number with 400 digits would simply be called a "400-digit number."
21
100 quintillion is a 21 digit number with 20 zeroes.
a Quadrillion is a 16 digit number
Oh, dude, a 21-digit number is called a "21-digit number." I mean, it's not like they have a fancy name for every length of numbers, you know? Just count those digits and there you have it, a 21-digit number. Keep it simple, right?
You would call it million.
A doublelery
sum
You are missing a digit. Find it.
A rational number
21 and 20
A 400-digit number is typically referred to as a "400-digit number." In mathematics, numbers are categorized by their number of digits, such as single-digit numbers, double-digit numbers, triple-digit numbers, and so on. Therefore, a number with 400 digits would simply be called a "400-digit number."
21, for example.
You call a 22 digit number a 22-digit number. I mean, it's pretty self-explanatory, honey. Just count those digits and slap a hyphen in there every three or four numbers, and voilà, you've got yourself a 22-digit number.