12771149 has 2 divisors, whose sum is σ = 12771150. Its totient is φ = 12771148.

The previous prime is 12771139. The next prime is 12771151. The reversal of 12771149 is 94117721.

12771149 is digitally balanced in base 3, 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., 12460900 + 310249 = 3530^2 + 557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12771149 is a prime.

It is a Sophie Germain prime.

Together with 12771151, it forms a pair of twin primes.

It is a Chen 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 (12771139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6385574 + 6385575.

It is an arithmetic number, because the mean of its divisors is an integer number (6385575).

Almost surely, 2^12771149 is an apocalyptic number.

It is an amenable number.

12771149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12771149 is an equidigital number, since it uses as much as digits as its factorization.

12771149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3528, while the sum is 32.

The square root of 12771149 is about 3573.6744395650. The cubic root of 12771149 is about 233.7455351030.

The spelling of 12771149 in words is "twelve million, seven hundred seventy-one thousand, one hundred forty-nine".