12217497 has 16 divisors (see below), whose sum is σ = 16943040. Its totient is φ = 7821632.

The previous prime is 12217481. The next prime is 12217529. The reversal of 12217497 is 79471221.

It is a cyclic number.

It is not a de Polignac number, because 12217497 - 2⁴ = 12217481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12217417) 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 in 15 ways as a sum of consecutive naturals, for example, 27358 + ... + 27800.

It is an arithmetic number, because the mean of its divisors is an integer number (1058940).

Almost surely, 2^12217497 is an apocalyptic number.

It is an amenable number.

12217497 is a deficient number, since it is larger than the sum of its proper divisors (4725543).

12217497 is a wasteful number, since it uses less digits than its factorization.

12217497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792.

The product of its digits is 7056, while the sum is 33.

The square root of 12217497 is about 3495.3536301782. The cubic root of 12217497 is about 230.3177523692.

The spelling of 12217497 in words is "twelve million, two hundred seventeen thousand, four hundred ninety-seven".