121065239 has 2 divisors, whose sum is σ = 121065240. Its totient is φ = 121065238.

The previous prime is 121065223. The next prime is 121065277. The reversal of 121065239 is 932560121.

It is a weak prime.

It is an emirp because it is prime and its reverse (932560121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121065239 - 2⁴ = 121065223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121065299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60532619 + 60532620.

It is an arithmetic number, because the mean of its divisors is an integer number (60532620).

Almost surely, 2^121065239 is an apocalyptic number.

121065239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121065239 is an equidigital number, since it uses as much as digits as its factorization.

121065239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 121065239 is about 11002.9650094872. The cubic root of 121065239 is about 494.6976203094.

The spelling of 121065239 in words is "one hundred twenty-one million, sixty-five thousand, two hundred thirty-nine".