12222212102121 has 32 divisors (see below), whose sum is σ = 19115022834688. Its totient is φ = 6801090246720.

The previous prime is 12222212102069. The next prime is 12222212102137. The reversal of 12222212102121 is 12120121222221.

It is not a de Polignac number, because 12222212102121 - 2⁹ = 12222212101609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12222212102621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20146906 + ... + 20744691.

It is an arithmetic number, because the mean of its divisors is an integer number (597344463584).

Almost surely, 2^{12222212102121} is an apocalyptic number.

It is an amenable number.

12222212102121 is a deficient number, since it is larger than the sum of its proper divisors (6892810732567).

12222212102121 is a wasteful number, since it uses less digits than its factorization.

12222212102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40891981.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12222212102121 its reverse (12120121222221), we get a palindrome (24342333324342).

The spelling of 12222212102121 in words is "twelve trillion, two hundred twenty-two billion, two hundred twelve million, one hundred two thousand, one hundred twenty-one".