12287117 has 2 divisors, whose sum is σ = 12287118. Its totient is φ = 12287116.

The previous prime is 12287101. The next prime is 12287137. The reversal of 12287117 is 71178221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6651241 + 5635876 = 2579^2 + 2374^2 .

It is an emirp because it is prime and its reverse (71178221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12287117 - 2⁴ = 12287101 is a prime.

It is equal to p₈₀₅₆₂₈ and since 12287117 and 805628 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12287117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12287137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6143558 + 6143559.

It is an arithmetic number, because the mean of its divisors is an integer number (6143559).

Almost surely, 2^12287117 is an apocalyptic number.

It is an amenable number.

12287117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12287117 is an equidigital number, since it uses as much as digits as its factorization.

12287117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1568, while the sum is 29.

The square root of 12287117 is about 3505.2984181094. The cubic root of 12287117 is about 230.7544037454.

The spelling of 12287117 in words is "twelve million, two hundred eighty-seven thousand, one hundred seventeen".