220112120221 has 4 divisors (see below), whose sum is σ = 251556708832. Its totient is φ = 188667531612.

The previous prime is 220112120183. The next prime is 220112120237. The reversal of 220112120221 is 122021211022.

It is a happy number.

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 not a de Polignac number, because 220112120221 - 2²⁵ = 220078565789 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220112120195 and 220112120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220112120321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15722294295 + ... + 15722294308.

It is an arithmetic number, because the mean of its divisors is an integer number (62889177208).

Almost surely, 2^220112120221 is an apocalyptic number.

It is an amenable number.

220112120221 is a deficient number, since it is larger than the sum of its proper divisors (31444588611).

220112120221 is an equidigital number, since it uses as much as digits as its factorization.

220112120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31444588610.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 220112120221 its reverse (122021211022), we get a palindrome (342133331243).

The spelling of 220112120221 in words is "two hundred twenty billion, one hundred twelve million, one hundred twenty thousand, two hundred twenty-one".