111187766121 has 8 divisors (see below), whose sum is σ = 148257072384. Its totient is φ = 74121818640.

The previous prime is 111187766113. The next prime is 111187766149. The reversal of 111187766121 is 121667781111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111187766121 - 2³ = 111187766113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111187766821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 761410 + ... + 895611.

It is an arithmetic number, because the mean of its divisors is an integer number (18532134048).

Almost surely, 2^111187766121 is an apocalyptic number.

It is an amenable number.

111187766121 is a deficient number, since it is larger than the sum of its proper divisors (37069306263).

111187766121 is a wasteful number, since it uses less digits than its factorization.

111187766121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679391.

The product of its digits is 28224, while the sum is 42.

The spelling of 111187766121 in words is "one hundred eleven billion, one hundred eighty-seven million, seven hundred sixty-six thousand, one hundred twenty-one".