121931275 has 6 divisors (see below), whose sum is σ = 151194812. Its totient is φ = 97545000.

The previous prime is 121931269. The next prime is 121931287. The reversal of 121931275 is 572139121.

It is not a de Polignac number, because 121931275 - 2²⁵ = 88376843 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2438601 + ... + 2438650.

Almost surely, 2^121931275 is an apocalyptic number.

121931275 is a deficient number, since it is larger than the sum of its proper divisors (29263537).

121931275 is an equidigital number, since it uses as much as digits as its factorization.

121931275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4877261 (or 4877256 counting only the distinct ones).

The product of its digits is 3780, while the sum is 31.

The square root of 121931275 is about 11042.2495443637. The cubic root of 121931275 is about 495.8744194626.

The spelling of 121931275 in words is "one hundred twenty-one million, nine hundred thirty-one thousand, two hundred seventy-five".