21331302332 has 24 divisors (see below), whose sum is σ = 37457616000. Its totient is φ = 10629184176.

The previous prime is 21331302269. The next prime is 21331302361. The reversal of 21331302332 is 23320313312.

It is a junction number, because it is equal to n+sod(n) for n = 21331302298 and 21331302307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621919 + ... + 1635017.

It is an arithmetic number, because the mean of its divisors is an integer number (1560734000).

Almost surely, 2^21331302332 is an apocalyptic number.

It is an amenable number.

21331302332 is a deficient number, since it is larger than the sum of its proper divisors (16126313668).

21331302332 is a wasteful number, since it uses less digits than its factorization.

21331302332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14465 (or 14463 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 21331302332 its reverse (23320313312), we get a palindrome (44651615644).

The spelling of 21331302332 in words is "twenty-one billion, three hundred thirty-one million, three hundred two thousand, three hundred thirty-two".