12011013021181 has 2 divisors, whose sum is σ = 12011013021182. Its totient is φ = 12011013021180.

The previous prime is 12011013021167. The next prime is 12011013021253. The reversal of 12011013021181 is 18112031011021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11967137016025 + 43876005156 = 3459355^2 + 209466^2 .

It is a cyclic number.

It is not a de Polignac number, because 12011013021181 - 2²⁹ = 12010476150269 is a prime.

It is a super-2 number, since 2×12011013021181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12011013025181) 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, 6005506510590 + 6005506510591.

It is an arithmetic number, because the mean of its divisors is an integer number (6005506510591).

Almost surely, 2^{12011013021181} is an apocalyptic number.

It is an amenable number.

12011013021181 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011013021181 is an equidigital number, since it uses as much as digits as its factorization.

12011013021181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 22.

The spelling of 12011013021181 in words is "twelve trillion, eleven billion, thirteen million, twenty-one thousand, one hundred eighty-one".