12465217 has 2 divisors, whose sum is σ = 12465218. Its totient is φ = 12465216.

The previous prime is 12465209. The next prime is 12465221. The reversal of 12465217 is 71256421.

12465217 is digitally balanced in base 3, 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., 11082241 + 1382976 = 3329^2 + 1176^2 .

It is an emirp because it is prime and its reverse (71256421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12465217 - 2³ = 12465209 is a prime.

It is not a weakly prime, because it can be changed into another prime (12465617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6232608 + 6232609.

It is an arithmetic number, because the mean of its divisors is an integer number (6232609).

Almost surely, 2^12465217 is an apocalyptic number.

It is an amenable number.

12465217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12465217 is an equidigital number, since it uses as much as digits as its factorization.

12465217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 12465217 is about 3530.6114201367. The cubic root of 12465217 is about 231.8639771910.

It can be divided in two parts, 124 and 65217, that added together give a triangular number (65341 = T₃₆₁).

The spelling of 12465217 in words is "twelve million, four hundred sixty-five thousand, two hundred seventeen".