112865564855021 has 16 divisors (see below), whose sum is σ = 123214867106688. Its totient is φ = 102531072230400.

The previous prime is 112865564854967. The next prime is 112865564855027. The reversal of 112865564855021 is 120558465568211.

It is a de Polignac number, because none of the positive numbers 2^k-112865564855021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112865564855027) 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, 226904216 + ... + 227401086.

It is an arithmetic number, because the mean of its divisors is an integer number (7700929194168).

Almost surely, 2^{112865564855021} is an apocalyptic number.

112865564855021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112865564855021 is a deficient number, since it is larger than the sum of its proper divisors (10349302251667).

112865564855021 is a wasteful number, since it uses less digits than its factorization.

112865564855021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511732.

The product of its (nonzero) digits is 23040000, while the sum is 59.

The spelling of 112865564855021 in words is "one hundred twelve trillion, eight hundred sixty-five billion, five hundred sixty-four million, eight hundred fifty-five thousand, twenty-one".