121302400908959 has 2 divisors, whose sum is σ = 121302400908960. Its totient is φ = 121302400908958.

The previous prime is 121302400908919. The next prime is 121302400908991. The reversal of 121302400908959 is 959809004203121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121302400908959 - 2³⁶ = 121233681432223 is a prime.

It is a super-3 number, since 3×121302400908959³ (a number of 43 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121302400908959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121302400908919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60651200454479 + 60651200454480.

It is an arithmetic number, because the mean of its divisors is an integer number (60651200454480).

Almost surely, 2^{121302400908959} is an apocalyptic number.

121302400908959 is a deficient number, since it is larger than the sum of its proper divisors (1).

121302400908959 is an equidigital number, since it uses as much as digits as its factorization.

121302400908959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1399680, while the sum is 53.

The spelling of 121302400908959 in words is "one hundred twenty-one trillion, three hundred two billion, four hundred million, nine hundred eight thousand, nine hundred fifty-nine".