121589317 has 2 divisors, whose sum is σ = 121589318. Its totient is φ = 121589316.

The previous prime is 121589309. The next prime is 121589327. The reversal of 121589317 is 713985121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121572676 + 16641 = 11026^2 + 129^2 .

It is a cyclic number.

It is not a de Polignac number, because 121589317 - 2³ = 121589309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121589327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60794658 + 60794659.

It is an arithmetic number, because the mean of its divisors is an integer number (60794659).

Almost surely, 2^121589317 is an apocalyptic number.

It is an amenable number.

121589317 is a deficient number, since it is larger than the sum of its proper divisors (1).

121589317 is an equidigital number, since it uses as much as digits as its factorization.

121589317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 37.

The square root of 121589317 is about 11026.7545996091. The cubic root of 121589317 is about 495.4104231362.

The spelling of 121589317 in words is "one hundred twenty-one million, five hundred eighty-nine thousand, three hundred seventeen".