121517339 has 2 divisors, whose sum is σ = 121517340. Its totient is φ = 121517338.

The previous prime is 121517299. The next prime is 121517353. The reversal of 121517339 is 933715121.

It is a strong prime.

It is an emirp because it is prime and its reverse (933715121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121517339 - 2⁸ = 121517083 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (121517359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60758669 + 60758670.

It is an arithmetic number, because the mean of its divisors is an integer number (60758670).

Almost surely, 2^121517339 is an apocalyptic number.

121517339 is a deficient number, since it is larger than the sum of its proper divisors (1).

121517339 is an equidigital number, since it uses as much as digits as its factorization.

121517339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5670, while the sum is 32.

The square root of 121517339 is about 11023.4903274780. The cubic root of 121517339 is about 495.3126467553.

The spelling of 121517339 in words is "one hundred twenty-one million, five hundred seventeen thousand, three hundred thirty-nine".