121752365089 has 2 divisors, whose sum is σ = 121752365090. Its totient is φ = 121752365088.

The previous prime is 121752365029. The next prime is 121752365099. The reversal of 121752365089 is 980563257121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78745900689 + 43006464400 = 280617^2 + 207380^2 .

It is a cyclic number.

It is not a de Polignac number, because 121752365089 - 2⁷ = 121752364961 is a prime.

It is not a weakly prime, because it can be changed into another prime (121752365029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60876182544 + 60876182545.

It is an arithmetic number, because the mean of its divisors is an integer number (60876182545).

Almost surely, 2^121752365089 is an apocalyptic number.

It is an amenable number.

121752365089 is a deficient number, since it is larger than the sum of its proper divisors (1).

121752365089 is an equidigital number, since it uses as much as digits as its factorization.

121752365089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 121752365089 in words is "one hundred twenty-one billion, seven hundred fifty-two million, three hundred sixty-five thousand, eighty-nine".