12113657 has 2 divisors, whose sum is σ = 12113658. Its totient is φ = 12113656.

The previous prime is 12113599. The next prime is 12113669. The reversal of 12113657 is 75631121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10523536 + 1590121 = 3244^2 + 1261^2 .

It is an emirp because it is prime and its reverse (75631121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12113657 - 2⁶ = 12113593 is a prime.

It is not a weakly prime, because it can be changed into another prime (12113557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056828 + 6056829.

It is an arithmetic number, because the mean of its divisors is an integer number (6056829).

Almost surely, 2^12113657 is an apocalyptic number.

It is an amenable number.

12113657 is a deficient number, since it is larger than the sum of its proper divisors (1).

12113657 is an equidigital number, since it uses as much as digits as its factorization.

12113657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1260, while the sum is 26.

The square root of 12113657 is about 3480.4679283108. The cubic root of 12113657 is about 229.6633828196.

Adding to 12113657 its reverse (75631121), we get a palindrome (87744778).

The spelling of 12113657 in words is "twelve million, one hundred thirteen thousand, six hundred fifty-seven".