12122244222121 has 16 divisors (see below), whose sum is σ = 13355688964608. Its totient is φ = 10910711232000.

The previous prime is 12122244222119. The next prime is 12122244222139.

It is a happy number.

12122244222121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12122244222121 - 2¹ = 12122244222119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12122244222121.

It is not an unprimeable number, because it can be changed into a prime (12122244222161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32559400 + ... + 32929606.

It is an arithmetic number, because the mean of its divisors is an integer number (834730560288).

Almost surely, 2^{12122244222121} is an apocalyptic number.

12122244222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122244222121 is a deficient number, since it is larger than the sum of its proper divisors (1233444742487).

12122244222121 is a wasteful number, since it uses less digits than its factorization.

12122244222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399792.

The product of its digits is 4096, while the sum is 28.

It can be divided in two parts, 1212224 and 4222121, that added together give a palindrome (5434345).

The spelling of 12122244222121 in words is "twelve trillion, one hundred twenty-two billion, two hundred forty-four million, two hundred twenty-two thousand, one hundred twenty-one".