121302753239 has 2 divisors, whose sum is σ = 121302753240. Its totient is φ = 121302753238.

The previous prime is 121302753197. The next prime is 121302753251. The reversal of 121302753239 is 932357203121.

It is a strong prime.

It is an emirp because it is prime and its reverse (932357203121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121302753239 - 2⁸ = 121302752983 is a prime.

It is a super-2 number, since 2×121302753239² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121302713239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60651376619 + 60651376620.

It is an arithmetic number, because the mean of its divisors is an integer number (60651376620).

Almost surely, 2^121302753239 is an apocalyptic number.

121302753239 is a deficient number, since it is larger than the sum of its proper divisors (1).

121302753239 is an equidigital number, since it uses as much as digits as its factorization.

121302753239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 38.

The spelling of 121302753239 in words is "one hundred twenty-one billion, three hundred two million, seven hundred fifty-three thousand, two hundred thirty-nine".