21023432012 has 36 divisors (see below), whose sum is σ = 40462973040. Its totient is φ = 9550606560.

The previous prime is 21023431969. The next prime is 21023432021.

21023432012 is nontrivially palindromic in base 10.

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, 897878 + ... + 920994.

Almost surely, 2^21023432012 is an apocalyptic number.

21023432012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21023432012 is a deficient number, since it is larger than the sum of its proper divisors (19439541028).

21023432012 is a wasteful number, since it uses less digits than its factorization.

21023432012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25022 (or 25009 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The spelling of 21023432012 in words is "twenty-one billion, twenty-three million, four hundred thirty-two thousand, twelve".