121255231 has 2 divisors, whose sum is σ = 121255232. Its totient is φ = 121255230.

The previous prime is 121255223. The next prime is 121255249. The reversal of 121255231 is 132552121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121255231 - 2³ = 121255223 is a prime.

It is a super-2 number, since 2×121255231² = 29405662089726722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121255201) by changing a digit.

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 as a sum of consecutive naturals, namely, 60627615 + 60627616.

It is an arithmetic number, because the mean of its divisors is an integer number (60627616).

Almost surely, 2^121255231 is an apocalyptic number.

121255231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121255231 is an equidigital number, since it uses as much as digits as its factorization.

121255231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 600, while the sum is 22.

The square root of 121255231 is about 11011.5952976851. The cubic root of 121255231 is about 494.9562672652.

The spelling of 121255231 in words is "one hundred twenty-one million, two hundred fifty-five thousand, two hundred thirty-one".