12108517 has 2 divisors, whose sum is σ = 12108518. Its totient is φ = 12108516.

The previous prime is 12108493. The next prime is 12108521. The reversal of 12108517 is 71580121.

12108517 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., 10556001 + 1552516 = 3249^2 + 1246^2 .

It is a cyclic number.

It is not a de Polignac number, because 12108517 - 2¹⁹ = 11584229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12108491 and 12108500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12108017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6054258 + 6054259.

It is an arithmetic number, because the mean of its divisors is an integer number (6054259).

Almost surely, 2^12108517 is an apocalyptic number.

It is an amenable number.

12108517 is a deficient number, since it is larger than the sum of its proper divisors (1).

12108517 is an equidigital number, since it uses as much as digits as its factorization.

12108517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 12108517 is about 3479.7294435056. The cubic root of 12108517 is about 229.6308950583.

Adding to 12108517 its reverse (71580121), we get a palindrome (83688638).

The spelling of 12108517 in words is "twelve million, one hundred eight thousand, five hundred seventeen".