121761566275 has 12 divisors (see below), whose sum is σ = 159865774632. Its totient is φ = 91679296640.

The previous prime is 121761566221. The next prime is 121761566293. The reversal of 121761566275 is 572665167121.

It is not a de Polignac number, because 121761566275 - 2²⁵ = 121728011843 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143248477 + ... + 143249326.

It is an arithmetic number, because the mean of its divisors is an integer number (13322147886).

Almost surely, 2^121761566275 is an apocalyptic number.

121761566275 is a deficient number, since it is larger than the sum of its proper divisors (38104208357).

121761566275 is a wasteful number, since it uses less digits than its factorization.

121761566275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286497830 (or 286497825 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 49.

The spelling of 121761566275 in words is "one hundred twenty-one billion, seven hundred sixty-one million, five hundred sixty-six thousand, two hundred seventy-five".