12001231011149 has 2 divisors, whose sum is σ = 12001231011150. Its totient is φ = 12001231011148.

The previous prime is 12001231011073. The next prime is 12001231011167. The reversal of 12001231011149 is 94111013210021.

12001231011149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11505358722025 + 495872289124 = 3391955^2 + 704182^2 .

It is an emirp because it is prime and its reverse (94111013210021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001231011149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001231011199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000615505574 + 6000615505575.

It is an arithmetic number, because the mean of its divisors is an integer number (6000615505575).

Almost surely, 2^{12001231011149} is an apocalyptic number.

It is an amenable number.

12001231011149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001231011149 is an equidigital number, since it uses as much as digits as its factorization.

12001231011149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The spelling of 12001231011149 in words is "twelve trillion, one billion, two hundred thirty-one million, eleven thousand, one hundred forty-nine".