12256117 has 2 divisors, whose sum is σ = 12256118. Its totient is φ = 12256116.

The previous prime is 12256103. The next prime is 12256147. The reversal of 12256117 is 71165221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11792356 + 463761 = 3434^2 + 681^2 .

It is a cyclic number.

It is not a de Polignac number, because 12256117 - 2¹⁹ = 11731829 is a prime.

It is equal to p₈₀₃₇₂₅ and since 12256117 and 803725 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 12256091 and 12256100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12256147) 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, 6128058 + 6128059.

It is an arithmetic number, because the mean of its divisors is an integer number (6128059).

Almost surely, 2^12256117 is an apocalyptic number.

It is an amenable number.

12256117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256117 is an equidigital number, since it uses as much as digits as its factorization.

12256117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 840, while the sum is 25.

The square root of 12256117 is about 3500.8737480806. The cubic root of 12256117 is about 230.5601783388.

The spelling of 12256117 in words is "twelve million, two hundred fifty-six thousand, one hundred seventeen".