112123031220 has 96 divisors (see below), whose sum is σ = 348878880000. Its totient is φ = 29895046272.

The previous prime is 112123031213. The next prime is 112123031221. The reversal of 112123031220 is 22130321211.

112123031220 is a `hidden beast` number, since 1 + 121 + 230 + 312 + 2 + 0 = 666.

It is a super-2 number, since 2×112123031220² (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 junction number, because it is equal to n+sod(n) for n = 112123031193 and 112123031202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112123031221) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5393406 + ... + 5414154.

It is an arithmetic number, because the mean of its divisors is an integer number (3634155000).

Almost surely, 2^112123031220 is an apocalyptic number.

112123031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112123031220 is an abundant number, since it is smaller than the sum of its proper divisors (236755848780).

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

112123031220 is a wasteful number, since it uses less digits than its factorization.

112123031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30774 (or 30766 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 112123031220 its reverse (22130321211), we get a palindrome (134253352431).

The spelling of 112123031220 in words is "one hundred twelve billion, one hundred twenty-three million, thirty-one thousand, two hundred twenty".