111565601213 has 32 divisors (see below), whose sum is σ = 127419868800. Its totient is φ = 96751648000.

The previous prime is 111565601171. The next prime is 111565601233. The reversal of 111565601213 is 312106565111.

It is a cyclic number.

It is not a de Polignac number, because 111565601213 - 2¹⁴ = 111565584829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111565601213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111565601233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16396070 + ... + 16402872.

It is an arithmetic number, because the mean of its divisors is an integer number (3981870900).

Almost surely, 2^111565601213 is an apocalyptic number.

It is an amenable number.

111565601213 is a deficient number, since it is larger than the sum of its proper divisors (15854267587).

111565601213 is a wasteful number, since it uses less digits than its factorization.

111565601213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453.

The product of its (nonzero) digits is 5400, while the sum is 32.

The spelling of 111565601213 in words is "one hundred eleven billion, five hundred sixty-five million, six hundred one thousand, two hundred thirteen".