121752365029 has 2 divisors, whose sum is σ = 121752365030. Its totient is φ = 121752365028.

The previous prime is 121752365017. The next prime is 121752365089. The reversal of 121752365029 is 920563257121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109344632929 + 12407732100 = 330673^2 + 111390^2 .

It is a cyclic number.

It is not a de Polignac number, because 121752365029 - 2²⁹ = 121215494117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121752365089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60876182514 + 60876182515.

It is an arithmetic number, because the mean of its divisors is an integer number (60876182515).

Almost surely, 2^121752365029 is an apocalyptic number.

It is an amenable number.

121752365029 is a deficient number, since it is larger than the sum of its proper divisors (1).

121752365029 is an equidigital number, since it uses as much as digits as its factorization.

121752365029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 121752365029 in words is "one hundred twenty-one billion, seven hundred fifty-two million, three hundred sixty-five thousand, twenty-nine".