12271417 has 2 divisors, whose sum is σ = 12271418. Its totient is φ = 12271416.

The previous prime is 12271403. The next prime is 12271421. The reversal of 12271417 is 71417221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11417641 + 853776 = 3379^2 + 924^2 .

It is a cyclic number.

It is not a de Polignac number, because 12271417 - 2⁷ = 12271289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12271391 and 12271400.

It is not a weakly prime, because it can be changed into another prime (12271447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6135708 + 6135709.

It is an arithmetic number, because the mean of its divisors is an integer number (6135709).

Almost surely, 2^12271417 is an apocalyptic number.

It is an amenable number.

12271417 is a deficient number, since it is larger than the sum of its proper divisors (1).

12271417 is an equidigital number, since it uses as much as digits as its factorization.

12271417 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 12271417 is about 3503.0582353138. The cubic root of 12271417 is about 230.6560788555.

Adding to 12271417 its reverse (71417221), we get a palindrome (83688638).

The spelling of 12271417 in words is "twelve million, two hundred seventy-one thousand, four hundred seventeen".