12220121200122 has 64 divisors (see below), whose sum is σ = 30254845593600. Its totient is φ = 3624278361840.

The previous prime is 12220121200087. The next prime is 12220121200181. The reversal of 12220121200122 is 22100212102221.

It is a happy number.

12220121200122 is a `hidden beast` number, since 1 + 2 + 220 + 121 + 200 + 122 = 666.

It is a super-2 number, since 2×12220121200122² (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 a junction number, because it is equal to n+sod(n) for n = 12220121200095 and 12220121200104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 218829472 + ... + 218885307.

It is an arithmetic number, because the mean of its divisors is an integer number (472731962400).

Almost surely, 2^{12220121200122} is an apocalyptic number.

12220121200122 is an abundant number, since it is smaller than the sum of its proper divisors (18034724393478).

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

12220121200122 is a wasteful number, since it uses less digits than its factorization.

12220121200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437714848 (or 437714842 counting only the distinct ones).

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

Adding to 12220121200122 its reverse (22100212102221), we get a palindrome (34320333302343).

The spelling of 12220121200122 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-two".