21230033645504 has 14 divisors (see below), whose sum is σ = 42128348015424. Its totient is φ = 10615016822720.

The previous prime is 21230033645489. The next prime is 21230033645519. The reversal of 21230033645504 is 40554633003212.

It is an interprime number because it is at equal distance from previous prime (21230033645489) and next prime (21230033645519).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165859637792 + ... + 165859637919.

Almost surely, 2^{21230033645504} is an apocalyptic number.

It is an amenable number.

21230033645504 is a deficient number, since it is larger than the sum of its proper divisors (20898314369920).

21230033645504 is an equidigital number, since it uses as much as digits as its factorization.

21230033645504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331719275723 (or 331719275713 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 21230033645504 its reverse (40554633003212), we get a palindrome (61784666648716).

The spelling of 21230033645504 in words is "twenty-one trillion, two hundred thirty billion, thirty-three million, six hundred forty-five thousand, five hundred four".