12247117 has 2 divisors, whose sum is σ = 12247118. Its totient is φ = 12247116.

The previous prime is 12247097. The next prime is 12247129. The reversal of 12247117 is 71174221.

12247117 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., 6625476 + 5621641 = 2574^2 + 2371^2 .

It is an emirp because it is prime and its reverse (71174221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12247117 - 2⁷ = 12246989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12247091 and 12247100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12247177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6123558 + 6123559.

It is an arithmetic number, because the mean of its divisors is an integer number (6123559).

Almost surely, 2^12247117 is an apocalyptic number.

It is an amenable number.

12247117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12247117 is an equidigital number, since it uses as much as digits as its factorization.

12247117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 784, while the sum is 25.

The square root of 12247117 is about 3499.5881186220. The cubic root of 12247117 is about 230.5037289829.

The spelling of 12247117 in words is "twelve million, two hundred forty-seven thousand, one hundred seventeen".