13221002317 has 2 divisors, whose sum is σ = 13221002318. Its totient is φ = 13221002316.

The previous prime is 13221002297. The next prime is 13221002329. The reversal of 13221002317 is 71320012231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12287944201 + 933058116 = 110851^2 + 30546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13221002317 is a prime.

It is a super-2 number, since 2×13221002317² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13222002317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6610501158 + 6610501159.

It is an arithmetic number, because the mean of its divisors is an integer number (6610501159).

Almost surely, 2^13221002317 is an apocalyptic number.

It is an amenable number.

13221002317 is a deficient number, since it is larger than the sum of its proper divisors (1).

13221002317 is an equidigital number, since it uses as much as digits as its factorization.

13221002317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 13221002317 its reverse (71320012231), we get a palindrome (84541014548).

The spelling of 13221002317 in words is "thirteen billion, two hundred twenty-one million, two thousand, three hundred seventeen".