12721001712 has 40 divisors (see below), whose sum is σ = 33187972560. Its totient is φ = 4198348800.

The previous prime is 12721001701. The next prime is 12721001743. The reversal of 12721001712 is 21710012721.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1307137 + ... + 1316832.

It is an arithmetic number, because the mean of its divisors is an integer number (829699314).

Almost surely, 2^12721001712 is an apocalyptic number.

12721001712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12721001712 is an abundant number, since it is smaller than the sum of its proper divisors (20466970848).

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

12721001712 is a wasteful number, since it uses less digits than its factorization.

12721001712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624081 (or 2624075 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 24.

The spelling of 12721001712 in words is "twelve billion, seven hundred twenty-one million, one thousand, seven hundred twelve".