111201109975 has 24 divisors (see below), whose sum is σ = 141133145472. Its totient is φ = 86869221600.

The previous prime is 111201109967. The next prime is 111201109979. The reversal of 111201109975 is 579901102111.

It is not a de Polignac number, because 111201109975 - 2³ = 111201109967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201109979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4915440 + ... + 4938010.

It is an arithmetic number, because the mean of its divisors is an integer number (5880547728).

Almost surely, 2^111201109975 is an apocalyptic number.

111201109975 is a deficient number, since it is larger than the sum of its proper divisors (29932035497).

111201109975 is a wasteful number, since it uses less digits than its factorization.

111201109975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27207 (or 27202 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 37.

The spelling of 111201109975 in words is "one hundred eleven billion, two hundred one million, one hundred nine thousand, nine hundred seventy-five".