12113331257 has 2 divisors, whose sum is σ = 12113331258. Its totient is φ = 12113331256.

The previous prime is 12113331203. The next prime is 12113331289. The reversal of 12113331257 is 75213331121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11986746256 + 126585001 = 109484^2 + 11251^2 .

It is a cyclic number.

It is not a de Polignac number, because 12113331257 - 2²² = 12109136953 is a prime.

It is not a weakly prime, because it can be changed into another prime (12113331557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056665628 + 6056665629.

It is an arithmetic number, because the mean of its divisors is an integer number (6056665629).

Almost surely, 2^12113331257 is an apocalyptic number.

It is an amenable number.

12113331257 is a deficient number, since it is larger than the sum of its proper divisors (1).

12113331257 is an equidigital number, since it uses as much as digits as its factorization.

12113331257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

Adding to 12113331257 its reverse (75213331121), we get a palindrome (87326662378).

The spelling of 12113331257 in words is "twelve billion, one hundred thirteen million, three hundred thirty-one thousand, two hundred fifty-seven".