112012211221220 has 12 divisors (see below), whose sum is σ = 235225643564604. Its totient is φ = 44804884488480.

The previous prime is 112012211221189. The next prime is 112012211221243. The reversal of 112012211221220 is 22122112210211.

It can be written as a sum of positive squares in 2 ways, for example, as 11584234287844 + 100427976933376 = 3403562^2 + 10021376^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5600610561061 = 112012211221220 / (1 + 1 + 2 + 0 + 1 + 2 + 2 + 1 + 1 + 2 + 2 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 112012211221192 and 112012211221201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2800305280511 + ... + 2800305280550.

It is an arithmetic number, because the mean of its divisors is an integer number (19602136963717).

Almost surely, 2^{112012211221220} is an apocalyptic number.

112012211221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112012211221220 is an abundant number, since it is smaller than the sum of its proper divisors (123213432343384).

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

112012211221220 is a wasteful number, since it uses less digits than its factorization.

112012211221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600610561070 (or 5600610561068 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 112012211221220 its reverse (22122112210211), we get a palindrome (134134323431431).

The spelling of 112012211221220 in words is "one hundred twelve trillion, twelve billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twenty".