21310612332 has 24 divisors (see below), whose sum is σ = 49947749376. Its totient is φ = 7071682128.

The previous prime is 21310612331. The next prime is 21310612343. The reversal of 21310612332 is 23321601312.

It is not an unprimeable number, because it can be changed into a prime (21310612331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3979128 + ... + 3984479.

It is an arithmetic number, because the mean of its divisors is an integer number (2081156224).

Almost surely, 2^21310612332 is an apocalyptic number.

It is an amenable number.

21310612332 is an abundant number, since it is smaller than the sum of its proper divisors (28637137044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21310612332 is a wasteful number, since it uses less digits than its factorization.

21310612332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7963837 (or 7963835 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The spelling of 21310612332 in words is "twenty-one billion, three hundred ten million, six hundred twelve thousand, three hundred thirty-two".