220122112212121 has 12 divisors (see below), whose sum is σ = 256573563402000. Its totient is φ = 188297987751720.

The previous prime is 220122112212103. The next prime is 220122112212133. The reversal of 220122112212121 is 121212211221022.

It is not a de Polignac number, because 220122112212121 - 2³³ = 220113522277529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220122112212092 and 220122112212101.

It is not an unprimeable number, because it can be changed into a prime (220122112512121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4501266135 + ... + 4501315036.

It is an arithmetic number, because the mean of its divisors is an integer number (21381130283500).

Almost surely, 2^{220122112212121} is an apocalyptic number.

It is an amenable number.

220122112212121 is a deficient number, since it is larger than the sum of its proper divisors (36451451189879).

220122112212121 is an equidigital number, since it uses as much as digits as its factorization.

220122112212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9002581684 (or 9002581677 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 220122112212121 its reverse (121212211221022), we get a palindrome (341334323433143).

The spelling of 220122112212121 in words is "two hundred twenty trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twelve thousand, one hundred twenty-one".