12220121200104 has 24 divisors (see below), whose sum is σ = 33096161583810. Its totient is φ = 4073373733344.

The previous prime is 12220121200087. The next prime is 12220121200181. The reversal of 12220121200104 is 40100212102221.

It can be written as a sum of positive squares in only one way, i.e., 6916321412100 + 5303799788004 = 2629890^2 + 2302998^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12220121200104² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 84861952707 + ... + 84861952850.

Almost surely, 2^{12220121200104} is an apocalyptic number.

It is an amenable number.

12220121200104 is an abundant number, since it is smaller than the sum of its proper divisors (20876040383706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12220121200104 is a wasteful number, since it uses less digits than its factorization.

12220121200104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169723905569 (or 169723905562 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220121200104 its reverse (40100212102221), we get a palindrome (52320333302325).

The spelling of 12220121200104 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, two hundred thousand, one hundred four".