111113220312 has 40 divisors (see below), whose sum is σ = 311219901300. Its totient is φ = 37037739888.

The previous prime is 111113220307. The next prime is 111113220331. The reversal of 111113220312 is 213022311111.

It is a super-2 number, since 2×111113220312² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85734862 + ... + 85736157.

Almost surely, 2^111113220312 is an apocalyptic number.

111113220312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111113220312 is an abundant number, since it is smaller than the sum of its proper divisors (200106680988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111113220312 is a wasteful number, since it uses less digits than its factorization.

111113220312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171471037 (or 171471024 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 111113220312 its reverse (213022311111), we get a palindrome (324135531423).

The spelling of 111113220312 in words is "one hundred eleven billion, one hundred thirteen million, two hundred twenty thousand, three hundred twelve".