21023133299 has 16 divisors (see below), whose sum is σ = 25205022720. Its totient is φ = 17153394720.

The previous prime is 21023133293. The next prime is 21023133353. The reversal of 21023133299 is 99233132012.

It is a happy number.

It is not a de Polignac number, because 21023133299 - 2²⁴ = 21006356083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21023133293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714899 + ... + 743724.

It is an arithmetic number, because the mean of its divisors is an integer number (1575313920).

Almost surely, 2^21023133299 is an apocalyptic number.

21023133299 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

21023133299 is a deficient number, since it is larger than the sum of its proper divisors (4181889421).

21023133299 is a wasteful number, since it uses less digits than its factorization.

21023133299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458730.

The product of its (nonzero) digits is 17496, while the sum is 35.

The spelling of 21023133299 in words is "twenty-one billion, twenty-three million, one hundred thirty-three thousand, two hundred ninety-nine".