21051070013232 has 120 divisors (see below), whose sum is σ = 70873694428160. Its totient is φ = 5698033983360.

The previous prime is 21051070013221. The next prime is 21051070013257. The reversal of 21051070013232 is 23231007015012.

21051070013232 is a `hidden beast` number, since 2 + 10 + 510 + 7 + 0 + 0 + 132 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21051070013196 and 21051070013205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549559744 + ... + 549598047.

Almost surely, 2^{21051070013232} is an apocalyptic number.

It is an amenable number.

21051070013232 is an abundant number, since it is smaller than the sum of its proper divisors (49822624414928).

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

21051070013232 is a wasteful number, since it uses less digits than its factorization.

21051070013232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099157831 (or 1099157822 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

Adding to 21051070013232 its reverse (23231007015012), we get a palindrome (44282077028244).

The spelling of 21051070013232 in words is "twenty-one trillion, fifty-one billion, seventy million, thirteen thousand, two hundred thirty-two".