12001111000121 has 16 divisors (see below), whose sum is σ = 12928690142400. Its totient is φ = 11105580852288.

The previous prime is 12001111000097. The next prime is 12001111000199. The reversal of 12001111000121 is 12100011110021.

It is a cyclic number.

It is not a de Polignac number, because 12001111000121 - 2³⁸ = 11726233093177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12001111050121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33918650 + ... + 34270643.

It is an arithmetic number, because the mean of its divisors is an integer number (808043133900).

Almost surely, 2^{12001111000121} is an apocalyptic number.

It is an amenable number.

12001111000121 is a deficient number, since it is larger than the sum of its proper divisors (927579142279).

12001111000121 is a wasteful number, since it uses less digits than its factorization.

12001111000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68189528.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12001111000121 its reverse (12100011110021), we get a palindrome (24101122110142).

The spelling of 12001111000121 in words is "twelve trillion, one billion, one hundred eleven million, one hundred twenty-one", and thus it is an aban number.