21031005067152 has 80 divisors (see below), whose sum is σ = 55076840237568. Its totient is φ = 6913989688320.

The previous prime is 21031005067147. The next prime is 21031005067181. The reversal of 21031005067152 is 25176050013012.

It is a super-2 number, since 2×21031005067152² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84753502 + ... + 85001282.

Almost surely, 2^{21031005067152} is an apocalyptic number.

It is an amenable number.

21031005067152 is an abundant number, since it is smaller than the sum of its proper divisors (34045835170416).

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

21031005067152 is a wasteful number, since it uses less digits than its factorization.

21031005067152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272088 (or 272082 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The spelling of 21031005067152 in words is "twenty-one trillion, thirty-one billion, five million, sixty-seven thousand, one hundred fifty-two".