220112120220121 has 4 divisors (see below), whose sum is σ = 225231006736912. Its totient is φ = 214993233703332.

The previous prime is 220112120220061. The next prime is 220112120220143. The reversal of 220112120220121 is 121022021211022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220112120220121 - 2²⁵ = 220112086665689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220112120220191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2559443258331 + ... + 2559443258416.

It is an arithmetic number, because the mean of its divisors is an integer number (56307751684228).

Almost surely, 2^{220112120220121} is an apocalyptic number.

It is an amenable number.

220112120220121 is a deficient number, since it is larger than the sum of its proper divisors (5118886516791).

220112120220121 is an equidigital number, since it uses as much as digits as its factorization.

220112120220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118886516790.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 220112120220121 its reverse (121022021211022), we get a palindrome (341134141431143).

Subtracting from 220112120220121 its reverse (121022021211022), we obtain a palindrome (99090099009099).

The spelling of 220112120220121 in words is "two hundred twenty trillion, one hundred twelve billion, one hundred twenty million, two hundred twenty thousand, one hundred twenty-one".