112131122220 has 144 divisors (see below), whose sum is σ = 375229344672. Its totient is φ = 26928276480.

The previous prime is 112131122197. The next prime is 112131122221. The reversal of 112131122220 is 22221131211.

112131122220 is a `hidden beast` number, since 112 + 1 + 311 + 22 + 220 = 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 = 112131122193 and 112131122202.

It is not an unprimeable number, because it can be changed into a prime (112131122221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 488442 + ... + 680321.

It is an arithmetic number, because the mean of its divisors is an integer number (2605759338).

Almost surely, 2^112131122220 is an apocalyptic number.

112131122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112131122220 is an abundant number, since it is smaller than the sum of its proper divisors (263098222452).

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

112131122220 is a wasteful number, since it uses less digits than its factorization.

112131122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1168832 (or 1168827 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 112131122220 its reverse (22221131211), we get a palindrome (134352253431).

The spelling of 112131122220 in words is "one hundred twelve billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred twenty".