21032313299 has 4 divisors (see below), whose sum is σ = 21112284336. Its totient is φ = 20952342264.

The previous prime is 21032313277. The next prime is 21032313377. The reversal of 21032313299 is 99231323012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21032313299 - 2²⁴ = 21015536083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032315299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39985124 + ... + 39985649.

It is an arithmetic number, because the mean of its divisors is an integer number (5278071084).

Almost surely, 2^21032313299 is an apocalyptic number.

21032313299 is a deficient number, since it is larger than the sum of its proper divisors (79971037).

21032313299 is an equidigital number, since it uses as much as digits as its factorization.

21032313299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79971036.

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

The spelling of 21032313299 in words is "twenty-one billion, thirty-two million, three hundred thirteen thousand, two hundred ninety-nine".