12001164155251 has 2 divisors, whose sum is σ = 12001164155252. Its totient is φ = 12001164155250.

The previous prime is 12001164155209. The next prime is 12001164155261. The reversal of 12001164155251 is 15255146110021.

12001164155251 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 is a cyclic number.

It is not a de Polignac number, because 12001164155251 - 2²⁹ = 12000627284339 is a prime.

It is not a weakly prime, because it can be changed into another prime (12001164155261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000582077625 + 6000582077626.

It is an arithmetic number, because the mean of its divisors is an integer number (6000582077626).

Almost surely, 2^{12001164155251} is an apocalyptic number.

12001164155251 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001164155251 is an equidigital number, since it uses as much as digits as its factorization.

12001164155251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 34.

The spelling of 12001164155251 in words is "twelve trillion, one billion, one hundred sixty-four million, one hundred fifty-five thousand, two hundred fifty-one".