220112210111121 has 6 divisors (see below), whose sum is σ = 317939859049410. Its totient is φ = 146741473407408.

The previous prime is 220112210111119. The next prime is 220112210111179. The reversal of 220112210111121 is 121111012211022.

It is a happy number.

220112210111121 is a `hidden beast` number, since 220 + 1 + 1 + 2 + 210 + 111 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 116342110440000 + 103770099671121 = 10786200^2 + 10186761^2 .

It is not a de Polignac number, because 220112210111121 - 2¹ = 220112210111119 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 220112210111094 and 220112210111103.

It is not an unprimeable number, because it can be changed into a prime (220112210118121) 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 5 ways as a sum of consecutive naturals, for example, 12228456117276 + ... + 12228456117293.

It is an arithmetic number, because the mean of its divisors is an integer number (52989976508235).

Almost surely, 2^{220112210111121} is an apocalyptic number.

It is an amenable number.

220112210111121 is a deficient number, since it is larger than the sum of its proper divisors (97827648938289).

220112210111121 is a wasteful number, since it uses less digits than its factorization.

220112210111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24456912234575 (or 24456912234572 counting only the distinct ones).

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

Adding to 220112210111121 its reverse (121111012211022), we get a palindrome (341223222322143).

The spelling of 220112210111121 in words is "two hundred twenty trillion, one hundred twelve billion, two hundred ten million, one hundred eleven thousand, one hundred twenty-one".