220121012012122 has 12 divisors (see below), whose sum is σ = 357533833120830. Its totient is φ = 101594313236208.

The previous prime is 220121012012087. The next prime is 220121012012137. The reversal of 220121012012122 is 221210210121022.

It can be written as a sum of positive squares in 3 ways, for example, as 56364943660281 + 163756068351841 = 7507659^2 + 12796721^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220121012012122.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 325622798497 + ... + 325622799172.

Almost surely, 2^{220121012012122} is an apocalyptic number.

220121012012122 is a deficient number, since it is larger than the sum of its proper divisors (137412821108708).

220121012012122 is a wasteful number, since it uses less digits than its factorization.

220121012012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651245597697 (or 651245597684 counting only the distinct ones).

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

Adding to 220121012012122 its reverse (221210210121022), we get a palindrome (441331222133144).

The spelling of 220121012012122 in words is "two hundred twenty trillion, one hundred twenty-one billion, twelve million, twelve thousand, one hundred twenty-two".