12217417 has 2 divisors, whose sum is σ = 12217418. Its totient is φ = 12217416.

The previous prime is 12217411. The next prime is 12217427. The reversal of 12217417 is 71471221.

12217417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11363641 + 853776 = 3371^2 + 924^2 .

It is a cyclic number.

It is not a de Polignac number, because 12217417 - 2³ = 12217409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12217391 and 12217400.

It is not a weakly prime, because it can be changed into another prime (12217411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108708 + 6108709.

It is an arithmetic number, because the mean of its divisors is an integer number (6108709).

Almost surely, 2^12217417 is an apocalyptic number.

It is an amenable number.

12217417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12217417 is an equidigital number, since it uses as much as digits as its factorization.

12217417 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 12217417 is about 3495.3421863961. The cubic root of 12217417 is about 230.3172496623.

Adding to 12217417 its reverse (71471221), we get a palindrome (83688638).

The spelling of 12217417 in words is "twelve million, two hundred seventeen thousand, four hundred seventeen".