121133231 has 2 divisors, whose sum is σ = 121133232. Its totient is φ = 121133230.

The previous prime is 121133209. The next prime is 121133237. The reversal of 121133231 is 132331121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121133231 - 2⁶ = 121133167 is a prime.

It is a super-2 number, since 2×121133231² = 29346519304998722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121133237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60566615 + 60566616.

It is an arithmetic number, because the mean of its divisors is an integer number (60566616).

Almost surely, 2^121133231 is an apocalyptic number.

121133231 is a deficient number, since it is larger than the sum of its proper divisors (1).

121133231 is an equidigital number, since it uses as much as digits as its factorization.

121133231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 17.

The square root of 121133231 is about 11006.0542884360. The cubic root of 121133231 is about 494.7902127720.

Adding to 121133231 its reverse (132331121), we get a palindrome (253464352).

The spelling of 121133231 in words is "one hundred twenty-one million, one hundred thirty-three thousand, two hundred thirty-one".