12021712010 has 64 divisors (see below), whose sum is σ = 28565602560. Its totient is φ = 3526609920.

The previous prime is 12021712009. The next prime is 12021712033. The reversal of 12021712010 is 1021712021.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12021712010.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446105 + ... + 472284.

It is an arithmetic number, because the mean of its divisors is an integer number (446337540).

Almost surely, 2^12021712010 is an apocalyptic number.

12021712010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12021712010 is an abundant number, since it is smaller than the sum of its proper divisors (16543890550).

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

12021712010 is a wasteful number, since it uses less digits than its factorization.

12021712010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918431.

The product of its (nonzero) digits is 56, while the sum is 17.

The spelling of 12021712010 in words is "twelve billion, twenty-one million, seven hundred twelve thousand, ten".