12224512121 has 16 divisors (see below), whose sum is σ = 12883503360. Its totient is φ = 11576727360.

The previous prime is 12224512093. The next prime is 12224512123. The reversal of 12224512121 is 12121542221.

It is a cyclic number.

It is not a de Polignac number, because 12224512121 - 2¹⁸ = 12224249977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (12224512123) 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, 946916 + ... + 959738.

It is an arithmetic number, because the mean of its divisors is an integer number (805218960).

Almost surely, 2^12224512121 is an apocalyptic number.

It is an amenable number.

12224512121 is a deficient number, since it is larger than the sum of its proper divisors (658991239).

12224512121 is a wasteful number, since it uses less digits than its factorization.

12224512121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13256.

The product of its digits is 640, while the sum is 23.

The spelling of 12224512121 in words is "twelve billion, two hundred twenty-four million, five hundred twelve thousand, one hundred twenty-one".