21043006232 has 16 divisors (see below), whose sum is σ = 41776556760. Its totient is φ = 9902591104.

The previous prime is 21043006219. The next prime is 21043006267. The reversal of 21043006232 is 23260034012.

It is a super-2 number, since 2×21043006232² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21043006198 and 21043006207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77363858 + ... + 77364129.

Almost surely, 2^21043006232 is an apocalyptic number.

It is an amenable number.

21043006232 is a deficient number, since it is larger than the sum of its proper divisors (20733550528).

21043006232 is a wasteful number, since it uses less digits than its factorization.

21043006232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154728010 (or 154728006 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The spelling of 21043006232 in words is "twenty-one billion, forty-three million, six thousand, two hundred thirty-two".