12120222110021 has 16 divisors (see below), whose sum is σ = 12729757439040. Its totient is φ = 11523582322560.

The previous prime is 12120222109997. The next prime is 12120222110047. The reversal of 12120222110021 is 12001122202121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120222110021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120222110221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4459466 + ... + 6642836.

It is an arithmetic number, because the mean of its divisors is an integer number (795609839940).

Almost surely, 2^{12120222110021} is an apocalyptic number.

It is an amenable number.

12120222110021 is a deficient number, since it is larger than the sum of its proper divisors (609535329019).

12120222110021 is a wasteful number, since it uses less digits than its factorization.

12120222110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186324.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12120222110021 its reverse (12001122202121), we get a palindrome (24121344312142).

The spelling of 12120222110021 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-two million, one hundred ten thousand, twenty-one".