111247720272 has 160 divisors (see below), whose sum is σ = 344271715200. Its totient is φ = 34191618048.

The previous prime is 111247720261. The next prime is 111247720321. The reversal of 111247720272 is 272027742111.

111247720272 is a `hidden beast` number, since 1 + 112 + 477 + 2 + 0 + 2 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 5206603 + ... + 5227925.

It is an arithmetic number, because the mean of its divisors is an integer number (2151698220).

Almost surely, 2^111247720272 is an apocalyptic number.

111247720272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111247720272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172135857600).

111247720272 is an abundant number, since it is smaller than the sum of its proper divisors (233023994928).

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

111247720272 is a wasteful number, since it uses less digits than its factorization.

111247720272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22282 (or 22270 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The spelling of 111247720272 in words is "one hundred eleven billion, two hundred forty-seven million, seven hundred twenty thousand, two hundred seventy-two".