21022534232 has 64 divisors (see below), whose sum is σ = 45243532800. Its totient is φ = 8970716160.

The previous prime is 21022534223. The next prime is 21022534243. The reversal of 21022534232 is 23243522012.

It is a super-2 number, since 2×21022534232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22628744 + ... + 22629672.

It is an arithmetic number, because the mean of its divisors is an integer number (706930200).

Almost surely, 2^21022534232 is an apocalyptic number.

It is an amenable number.

21022534232 is an abundant number, since it is smaller than the sum of its proper divisors (24220998568).

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

21022534232 is a wasteful number, since it uses less digits than its factorization.

21022534232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256 (or 2252 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The spelling of 21022534232 in words is "twenty-one billion, twenty-two million, five hundred thirty-four thousand, two hundred thirty-two".