111152221542 has 32 divisors (see below), whose sum is σ = 247024222560. Its totient is φ = 37047847680.

The previous prime is 111152221519. The next prime is 111152221567. The reversal of 111152221542 is 245122251111.

111152221542 is a `hidden beast` number, since 1 + 1 + 115 + 2 + 2 + 2 + 1 + 542 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 684442 + ... + 831122.

It is an arithmetic number, because the mean of its divisors is an integer number (7719506955).

Almost surely, 2^111152221542 is an apocalyptic number.

111152221542 is an abundant number, since it is smaller than the sum of its proper divisors (135872001018).

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

111152221542 is a wasteful number, since it uses less digits than its factorization.

111152221542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160725 (or 160719 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

Adding to 111152221542 its reverse (245122251111), we get a palindrome (356274472653).

The spelling of 111152221542 in words is "one hundred eleven billion, one hundred fifty-two million, two hundred twenty-one thousand, five hundred forty-two".