121590317 has 2 divisors, whose sum is σ = 121590318. Its totient is φ = 121590316.

The previous prime is 121590311. The next prime is 121590323. The reversal of 121590317 is 713095121.

It is a balanced prime because it is at equal distance from previous prime (121590311) and next prime (121590323).

It can be written as a sum of positive squares in only one way, i.e., 112232836 + 9357481 = 10594^2 + 3059^2 .

It is an emirp because it is prime and its reverse (713095121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121590317 - 2⁸ = 121590061 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121590317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121590311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60795158 + 60795159.

It is an arithmetic number, because the mean of its divisors is an integer number (60795159).

Almost surely, 2^121590317 is an apocalyptic number.

It is an amenable number.

121590317 is a deficient number, since it is larger than the sum of its proper divisors (1).

121590317 is an equidigital number, since it uses as much as digits as its factorization.

121590317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 121590317 is about 11026.7999437734. The cubic root of 121590317 is about 495.4117812848.

The spelling of 121590317 in words is "one hundred twenty-one million, five hundred ninety thousand, three hundred seventeen".