111112011222120 has 96 divisors (see below), whose sum is σ = 372762876395520. Its totient is φ = 28674067409280.

The previous prime is 111112011222109. The next prime is 111112011222139. The reversal of 111112011222120 is 21222110211111.

It is a happy number.

111112011222120 is a `hidden beast` number, since 11 + 111 + 201 + 1 + 222 + 120 = 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 = 111112011222093 and 111112011222102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4978125544 + ... + 4978147863.

It is an arithmetic number, because the mean of its divisors is an integer number (3882946629120).

Almost surely, 2^{111112011222120} is an apocalyptic number.

111112011222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111112011222120 is an abundant number, since it is smaller than the sum of its proper divisors (261650865173400).

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

111112011222120 is a wasteful number, since it uses less digits than its factorization.

111112011222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9956273455 (or 9956273448 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111112011222120 its reverse (21222110211111), we get a palindrome (132334121433231).

It can be divided in two parts, 11111201 and 1222120, that added together give a palindrome (12333321).

The spelling of 111112011222120 in words is "one hundred eleven trillion, one hundred twelve billion, eleven million, two hundred twenty-two thousand, one hundred twenty".