21023403130032 has 40 divisors (see below), whose sum is σ = 54312051139584. Its totient is φ = 7007595488064.

The previous prime is 21023403130007. The next prime is 21023403130127. The reversal of 21023403130032 is 23003130432012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21023403129984 and 21023403130011.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4765728 + ... + 8047295.

Almost surely, 2^{21023403130032} is an apocalyptic number.

It is an amenable number.

21023403130032 is an abundant number, since it is smaller than the sum of its proper divisors (33288648009552).

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

21023403130032 is a wasteful number, since it uses less digits than its factorization.

21023403130032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12847217 (or 12847211 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21023403130032 its reverse (23003130432012), we get a palindrome (44026533562044).

The spelling of 21023403130032 in words is "twenty-one trillion, twenty-three billion, four hundred three million, one hundred thirty thousand, thirty-two".