12331721016 has 64 divisors (see below), whose sum is σ = 34667539200. Its totient is φ = 4061042784.

The previous prime is 12331720991. The next prime is 12331721023. The reversal of 12331721016 is 61012713321.

12331721016 is a `hidden beast` number, since 123 + 317 + 210 + 16 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 325996 + ... + 361851.

It is an arithmetic number, because the mean of its divisors is an integer number (541680300).

Almost surely, 2^12331721016 is an apocalyptic number.

It is an amenable number.

12331721016 is an abundant number, since it is smaller than the sum of its proper divisors (22335818184).

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

12331721016 is a wasteful number, since it uses less digits than its factorization.

12331721016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687945 (or 687935 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The spelling of 12331721016 in words is "twelve billion, three hundred thirty-one million, seven hundred twenty-one thousand, sixteen".