21133022432 has 24 divisors (see below), whose sum is σ = 41779735200. Its totient is φ = 10522296064.

The previous prime is 21133022381. The next prime is 21133022447. The reversal of 21133022432 is 23422033112.

It is a super-2 number, since 2×21133022432² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21133022398 and 21133022407.

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, 1373957 + ... + 1389252.

It is an arithmetic number, because the mean of its divisors is an integer number (1740822300).

Almost surely, 2^21133022432 is an apocalyptic number.

It is an amenable number.

21133022432 is a deficient number, since it is larger than the sum of its proper divisors (20646712768).

21133022432 is a wasteful number, since it uses less digits than its factorization.

21133022432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763458 (or 2763450 counting only the distinct ones).

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

Adding to 21133022432 its reverse (23422033112), we get a palindrome (44555055544).

The spelling of 21133022432 in words is "twenty-one billion, one hundred thirty-three million, twenty-two thousand, four hundred thirty-two".