21014512113 has 32 divisors (see below), whose sum is σ = 32953282560. Its totient is φ = 11663009280.

The previous prime is 21014512093. The next prime is 21014512133. The reversal of 21014512113 is 31121541012.

It is an interprime number because it is at equal distance from previous prime (21014512093) and next prime (21014512133).

It is not a de Polignac number, because 21014512113 - 2¹² = 21014508017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21014512113.

It is not an unprimeable number, because it can be changed into a prime (21014512133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48033 + ... + 210561.

It is an arithmetic number, because the mean of its divisors is an integer number (1029790080).

Almost surely, 2^21014512113 is an apocalyptic number.

It is an amenable number.

21014512113 is a deficient number, since it is larger than the sum of its proper divisors (11938770447).

21014512113 is a wasteful number, since it uses less digits than its factorization.

21014512113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162717.

The product of its (nonzero) digits is 240, while the sum is 21.

The spelling of 21014512113 in words is "twenty-one billion, fourteen million, five hundred twelve thousand, one hundred thirteen".