21347573112 has 64 divisors (see below), whose sum is σ = 59311620000. Its totient is φ = 7114321152.

The previous prime is 21347573111. The next prime is 21347573123. The reversal of 21347573112 is 21137574312.

21347573112 is a `hidden beast` number, since 2 + 1 + 3 + 475 + 73 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21347573111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1460014 + ... + 1474562.

Almost surely, 2^21347573112 is an apocalyptic number.

It is an amenable number.

21347573112 is an abundant number, since it is smaller than the sum of its proper divisors (37964046888).

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

21347573112 is a wasteful number, since it uses less digits than its factorization.

21347573112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21357 (or 21347 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The spelling of 21347573112 in words is "twenty-one billion, three hundred forty-seven million, five hundred seventy-three thousand, one hundred twelve".