121313317 has 2 divisors, whose sum is σ = 121313318. Its totient is φ = 121313316.

The previous prime is 121313303. The next prime is 121313359. The reversal of 121313317 is 713313121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89605156 + 31708161 = 9466^2 + 5631^2 .

It is a cyclic number.

It is not a de Polignac number, because 121313317 - 2⁷ = 121313189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121313117) 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 as a sum of consecutive naturals, namely, 60656658 + 60656659.

It is an arithmetic number, because the mean of its divisors is an integer number (60656659).

Almost surely, 2^121313317 is an apocalyptic number.

It is an amenable number.

121313317 is a deficient number, since it is larger than the sum of its proper divisors (1).

121313317 is an equidigital number, since it uses as much as digits as its factorization.

121313317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 22.

The square root of 121313317 is about 11014.2324743942. The cubic root of 121313317 is about 495.0352891210.

Adding to 121313317 its reverse (713313121), we get a palindrome (834626438).

The spelling of 121313317 in words is "one hundred twenty-one million, three hundred thirteen thousand, three hundred seventeen".