220022120121 has 16 divisors (see below), whose sum is σ = 298983864960. Its totient is φ = 143872485120.

The previous prime is 220022120069. The next prime is 220022120137. The reversal of 220022120121 is 121021220022.

It is not a de Polignac number, because 220022120121 - 2²² = 220017925817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220022120121.

It is not an unprimeable number, because it can be changed into a prime (220022120161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361185 + ... + 755313.

It is an arithmetic number, because the mean of its divisors is an integer number (18686491560).

Almost surely, 2^220022120121 is an apocalyptic number.

It is an amenable number.

220022120121 is a deficient number, since it is larger than the sum of its proper divisors (78961744839).

220022120121 is a wasteful number, since it uses less digits than its factorization.

220022120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397696.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 220022120121 its reverse (121021220022), we get a palindrome (341043340143).

Subtracting from 220022120121 its reverse (121021220022), we obtain a palindrome (99000900099).

The spelling of 220022120121 in words is "two hundred twenty billion, twenty-two million, one hundred twenty thousand, one hundred twenty-one".