121275231 has 16 divisors (see below), whose sum is σ = 201600768. Its totient is φ = 63000000.

The previous prime is 121275169. The next prime is 121275257. The reversal of 121275231 is 132572121.

It is not a de Polignac number, because 121275231 - 2¹⁴ = 121258847 is a prime.

It is a super-2 number, since 2×121275231² = 29415363308206722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121275631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262270 + ... + 262731.

It is an arithmetic number, because the mean of its divisors is an integer number (12600048).

Almost surely, 2^121275231 is an apocalyptic number.

121275231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121275231 is a deficient number, since it is larger than the sum of its proper divisors (80325537).

121275231 is a wasteful number, since it uses less digits than its factorization.

121275231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525022.

The product of its digits is 840, while the sum is 24.

The square root of 121275231 is about 11012.5033938701. The cubic root of 121275231 is about 494.9834786854.

The spelling of 121275231 in words is "one hundred twenty-one million, two hundred seventy-five thousand, two hundred thirty-one".