111213111112 has 64 divisors (see below), whose sum is σ = 212839144560. Its totient is φ = 54469632000.

The previous prime is 111213111101. The next prime is 111213111133. The reversal of 111213111112 is 211111312111.

It can be written as a sum of positive squares in 8 ways, for example, as 57271190596 + 53941920516 = 239314^2 + 232254^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93220788 + ... + 93221980.

Almost surely, 2^111213111112 is an apocalyptic number.

It is an amenable number.

111213111112 is a deficient number, since it is larger than the sum of its proper divisors (101626033448).

111213111112 is a wasteful number, since it uses less digits than its factorization.

111213111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2430 counting only the distinct ones).

The product of its digits is 12, while the sum is 16.

Adding to 111213111112 its reverse (211111312111), we get a palindrome (322324423223).

The spelling of 111213111112 in words is "one hundred eleven billion, two hundred thirteen million, one hundred eleven thousand, one hundred twelve".