12001201222122 has 48 divisors (see below), whose sum is σ = 31465334302272. Its totient is φ = 3227213773440.

The previous prime is 12001201222117. The next prime is 12001201222189. The reversal of 12001201222122 is 22122210210021.

It is a happy number.

12001201222122 is a `hidden beast` number, since 1 + 200 + 120 + 1 + 222 + 122 = 666.

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 = 12001201222095 and 12001201222104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2801398704 + ... + 2801402987.

It is an arithmetic number, because the mean of its divisors is an integer number (655527797964).

Almost surely, 2^{12001201222122} is an apocalyptic number.

12001201222122 is an abundant number, since it is smaller than the sum of its proper divisors (19464133080150).

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

12001201222122 is a wasteful number, since it uses less digits than its factorization.

12001201222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5602801723 (or 5602801720 counting only the distinct ones).

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

Adding to 12001201222122 its reverse (22122210210021), we get a palindrome (34123411432143).

It can be divided in two parts, 1200120 and 1222122, that added together give a palindrome (2422242).

The spelling of 12001201222122 in words is "twelve trillion, one billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-two".