121330331 has 2 divisors, whose sum is σ = 121330332. Its totient is φ = 121330330.

The previous prime is 121330327. The next prime is 121330337. The reversal of 121330331 is 133033121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121330331 - 2² = 121330327 is a prime.

It is a super-2 number, since 2×121330331² = 29442098441139122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121330337) 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, 60665165 + 60665166.

It is an arithmetic number, because the mean of its divisors is an integer number (60665166).

Almost surely, 2^121330331 is an apocalyptic number.

121330331 is a deficient number, since it is larger than the sum of its proper divisors (1).

121330331 is an equidigital number, since it uses as much as digits as its factorization.

121330331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 121330331 is about 11015.0048116195. The cubic root of 121330331 is about 495.0584306769.

Adding to 121330331 its reverse (133033121), we get a palindrome (254363452).

The spelling of 121330331 in words is "one hundred twenty-one million, three hundred thirty thousand, three hundred thirty-one".