111101099999972 has 48 divisors (see below), whose sum is σ = 212660939796480. Its totient is φ = 50591917332000.

The previous prime is 111101099999971. The next prime is 111101100000019. The reversal of 111101099999972 is 279999990101111.

It is not an unprimeable number, because it can be changed into a prime (111101099999971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155792138 + ... + 156503649.

It is an arithmetic number, because the mean of its divisors is an integer number (4430436245760).

Almost surely, 2^{111101099999972} is an apocalyptic number.

It is an amenable number.

111101099999972 is a deficient number, since it is larger than the sum of its proper divisors (101559839796508).

111101099999972 is a wasteful number, since it uses less digits than its factorization.

111101099999972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312295992 (or 312295990 counting only the distinct ones).

The product of its (nonzero) digits is 7440174, while the sum is 68.

The spelling of 111101099999972 in words is "one hundred eleven trillion, one hundred one billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-two".