121510243512239 has 2 divisors, whose sum is σ = 121510243512240. Its totient is φ = 121510243512238.

The previous prime is 121510243512143. The next prime is 121510243512253. The reversal of 121510243512239 is 932215342015121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121510243512239 - 2²⁰ = 121510242463663 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121510243512196 and 121510243512205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121510243502239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60755121756119 + 60755121756120.

It is an arithmetic number, because the mean of its divisors is an integer number (60755121756120).

Almost surely, 2^{121510243512239} is an apocalyptic number.

121510243512239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121510243512239 is an equidigital number, since it uses as much as digits as its factorization.

121510243512239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 121510243512239 in words is "one hundred twenty-one trillion, five hundred ten billion, two hundred forty-three million, five hundred twelve thousand, two hundred thirty-nine".