10521556012 has 12 divisors (see below), whose sum is σ = 20086607016. Its totient is φ = 4782525440.

The previous prime is 10521555977. The next prime is 10521556027. The reversal of 10521556012 is 21065512501.

It is a super-2 number, since 2×10521556012² (a number of 21 digits) contains 22 as substring.

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, 119563093 + ... + 119563180.

It is an arithmetic number, because the mean of its divisors is an integer number (1673883918).

Almost surely, 2^10521556012 is an apocalyptic number.

It is an amenable number.

10521556012 is a deficient number, since it is larger than the sum of its proper divisors (9565051004).

10521556012 is a wasteful number, since it uses less digits than its factorization.

10521556012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239126288 (or 239126286 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 10521556012 in words is "ten billion, five hundred twenty-one million, five hundred fifty-six thousand, twelve".