12011121002131 has 2 divisors, whose sum is σ = 12011121002132. Its totient is φ = 12011121002130.

The previous prime is 12011121002123. The next prime is 12011121002191. The reversal of 12011121002131 is 13120012111021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12011121002131 - 2³ = 12011121002123 is a prime.

It is a super-2 number, since 2×12011121002131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12011121002191) 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 as a sum of consecutive naturals, namely, 6005560501065 + 6005560501066.

It is an arithmetic number, because the mean of its divisors is an integer number (6005560501066).

Almost surely, 2^{12011121002131} is an apocalyptic number.

12011121002131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011121002131 is an equidigital number, since it uses as much as digits as its factorization.

12011121002131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 12011121002131 its reverse (13120012111021), we get a palindrome (25131133113152).

The spelling of 12011121002131 in words is "twelve trillion, eleven billion, one hundred twenty-one million, two thousand, one hundred thirty-one".