111212312108 has 24 divisors (see below), whose sum is σ = 195094448640. Its totient is φ = 55471140560.

The previous prime is 111212312063. The next prime is 111212312131. The reversal of 111212312108 is 801213212111.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5081453 + ... + 5103291.

It is an arithmetic number, because the mean of its divisors is an integer number (8128935360).

Almost surely, 2^111212312108 is an apocalyptic number.

It is an amenable number.

111212312108 is a deficient number, since it is larger than the sum of its proper divisors (83882136532).

111212312108 is a wasteful number, since it uses less digits than its factorization.

111212312108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24877 (or 24875 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 23.

Adding to 111212312108 its reverse (801213212111), we get a palindrome (912425524219).

The spelling of 111212312108 in words is "one hundred eleven billion, two hundred twelve million, three hundred twelve thousand, one hundred eight".