12220222022121 has 16 divisors (see below), whose sum is σ = 16822894419968. Its totient is φ = 7882296656400.

The previous prime is 12220222022117. The next prime is 12220222022123. The reversal of 12220222022121 is 12122022202221.

It is not a de Polignac number, because 12220222022121 - 2² = 12220222022117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12220222022123) 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, 13883671 + ... + 14737596.

It is an arithmetic number, because the mean of its divisors is an integer number (1051430901248).

Almost surely, 2^{12220222022121} is an apocalyptic number.

It is an amenable number.

12220222022121 is a deficient number, since it is larger than the sum of its proper divisors (4602672397847).

12220222022121 is a wasteful number, since it uses less digits than its factorization.

12220222022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28625892.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12220222022121 its reverse (12122022202221), we get a palindrome (24342244224342).

The spelling of 12220222022121 in words is "twelve trillion, two hundred twenty billion, two hundred twenty-two million, twenty-two thousand, one hundred twenty-one".