111216563612 has 72 divisors (see below), whose sum is σ = 259986867840. Its totient is φ = 41050527840.

The previous prime is 111216563611. The next prime is 111216563699. The reversal of 111216563612 is 216365612111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111216563611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1316528 + ... + 1398455.

It is an arithmetic number, because the mean of its divisors is an integer number (3610928720).

Almost surely, 2^111216563612 is an apocalyptic number.

It is an amenable number.

111216563612 is an abundant number, since it is smaller than the sum of its proper divisors (148770304228).

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

111216563612 is a wasteful number, since it uses less digits than its factorization.

111216563612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715031 (or 2715022 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The spelling of 111216563612 in words is "one hundred eleven billion, two hundred sixteen million, five hundred sixty-three thousand, six hundred twelve".