12236912121 has 32 divisors (see below), whose sum is σ = 18802631680. Its totient is φ = 6934175424.

The previous prime is 12236912117. The next prime is 12236912189. The reversal of 12236912121 is 12121963221.

It is not a de Polignac number, because 12236912121 - 2² = 12236912117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12236912921) 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 31 ways as a sum of consecutive naturals, for example, 3276171 + ... + 3279903.

It is an arithmetic number, because the mean of its divisors is an integer number (587582240).

Almost surely, 2^12236912121 is an apocalyptic number.

It is an amenable number.

12236912121 is a deficient number, since it is larger than the sum of its proper divisors (6565719559).

12236912121 is a wasteful number, since it uses less digits than its factorization.

12236912121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005.

The product of its digits is 2592, while the sum is 30.

The spelling of 12236912121 in words is "twelve billion, two hundred thirty-six million, nine hundred twelve thousand, one hundred twenty-one".