21331501112 has 32 divisors (see below), whose sum is σ = 40559178000. Its totient is φ = 10515826944.

The previous prime is 21331501099. The next prime is 21331501123. The reversal of 21331501112 is 21110513312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277014 + ... + 2286362.

Almost surely, 2^21331501112 is an apocalyptic number.

It is an amenable number.

21331501112 is a deficient number, since it is larger than the sum of its proper divisors (19227676888).

21331501112 is a wasteful number, since it uses less digits than its factorization.

21331501112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13335 (or 13331 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 21331501112 in words is "twenty-one billion, three hundred thirty-one million, five hundred one thousand, one hundred twelve".