111213132120 has 96 divisors (see below), whose sum is σ = 365021439120. Its totient is φ = 29363193600.

The previous prime is 111213132109. The next prime is 111213132187. The reversal of 111213132120 is 21231312111.

111213132120 is a `hidden beast` number, since 111 + 213 + 1 + 321 + 20 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 111213132093 and 111213132102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1492974 + ... + 1565693.

Almost surely, 2^111213132120 is an apocalyptic number.

111213132120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111213132120 is an abundant number, since it is smaller than the sum of its proper divisors (253808307000).

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

111213132120 is a wasteful number, since it uses less digits than its factorization.

111213132120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058785 (or 3058778 counting only the distinct ones).

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

Adding to 111213132120 its reverse (21231312111), we get a palindrome (132444444231).

The spelling of 111213132120 in words is "one hundred eleven billion, two hundred thirteen million, one hundred thirty-two thousand, one hundred twenty".