21303312232 has 48 divisors (see below), whose sum is σ = 40663308960. Its totient is φ = 10462235616.

The previous prime is 21303312229. The next prime is 21303312253. The reversal of 21303312232 is 23221330312.

It is a super-2 number, since 2×21303312232² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13805653 + ... + 13807195.

It is an arithmetic number, because the mean of its divisors is an integer number (847152270).

Almost surely, 2^21303312232 is an apocalyptic number.

It is an amenable number.

21303312232 is a deficient number, since it is larger than the sum of its proper divisors (19359996728).

21303312232 is a wasteful number, since it uses less digits than its factorization.

21303312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21303312232 its reverse (23221330312), we get a palindrome (44524642544).

The spelling of 21303312232 in words is "twenty-one billion, three hundred three million, three hundred twelve thousand, two hundred thirty-two".