32000010021 has 36 divisors (see below), whose sum is σ = 53785123392. Its totient is φ = 18280143504.

The previous prime is 32000010017. The next prime is 32000010023. The reversal of 32000010021 is 12001000023.

It is a happy number.

It is not a de Polignac number, because 32000010021 - 2² = 32000010017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 32000009985 and 32000010012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32000010023) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1756260 + ... + 1774386.

Almost surely, 2^32000010021 is an apocalyptic number.

It is an amenable number.

32000010021 is a deficient number, since it is larger than the sum of its proper divisors (21785113371).

32000010021 is a wasteful number, since it uses less digits than its factorization.

32000010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22150 (or 22140 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 32000010021 its reverse (12001000023), we get a palindrome (44001010044).

The spelling of 32000010021 in words is "thirty-two billion, ten thousand, twenty-one".