111666122315 has 12 divisors (see below), whose sum is σ = 147288538992. Its totient is φ = 81211724880.

The previous prime is 111666122297. The next prime is 111666122329. The reversal of 111666122315 is 513221666111.

It is not a de Polignac number, because 111666122315 - 2⁸ = 111666122059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92285447 + ... + 92286656.

It is an arithmetic number, because the mean of its divisors is an integer number (12274044916).

Almost surely, 2^111666122315 is an apocalyptic number.

111666122315 is a deficient number, since it is larger than the sum of its proper divisors (35622416677).

111666122315 is a wasteful number, since it uses less digits than its factorization.

111666122315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184572130 (or 184572119 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

Adding to 111666122315 its reverse (513221666111), we get a palindrome (624887788426).

The spelling of 111666122315 in words is "one hundred eleven billion, six hundred sixty-six million, one hundred twenty-two thousand, three hundred fifteen".