121752365041 has 4 divisors (see below), whose sum is σ = 123420205732. Its totient is φ = 120084524352.

The previous prime is 121752365029. The next prime is 121752365089. The reversal of 121752365041 is 140563257121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140563257121 = 7 ⋅20080465303.

It can be written as a sum of positive squares in 2 ways, for example, as 21171414016 + 100580951025 = 145504^2 + 317145^2 .

It is a cyclic number.

It is not a de Polignac number, because 121752365041 - 2¹¹ = 121752362993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121752365641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833920236 + ... + 833920381.

It is an arithmetic number, because the mean of its divisors is an integer number (30855051433).

Almost surely, 2^121752365041 is an apocalyptic number.

It is an amenable number.

121752365041 is a deficient number, since it is larger than the sum of its proper divisors (1667840691).

121752365041 is an equidigital number, since it uses as much as digits as its factorization.

121752365041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667840690.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 121752365041 in words is "one hundred twenty-one billion, seven hundred fifty-two million, three hundred sixty-five thousand, forty-one".