121233231 has 24 divisors (see below), whose sum is σ = 200557344. Its totient is φ = 69128640.

The previous prime is 121233227. The next prime is 121233241. The reversal of 121233231 is 132332121.

It is not a de Polignac number, because 121233231 - 2² = 121233227 is a prime.

It is a super-2 number, since 2×121233231² = 29394992597398722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32305 + ... + 35861.

It is an arithmetic number, because the mean of its divisors is an integer number (8356556).

Almost surely, 2^121233231 is an apocalyptic number.

121233231 is a deficient number, since it is larger than the sum of its proper divisors (79324113).

121233231 is a wasteful number, since it uses less digits than its factorization.

121233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111 (or 4108 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 121233231 is about 11010.5963053778. The cubic root of 121233231 is about 494.9263312467.

Adding to 121233231 its reverse (132332121), we get a palindrome (253565352).

It can be divided in two parts, 1212 and 33231, that added together give a palindrome (34443).

The spelling of 121233231 in words is "one hundred twenty-one million, two hundred thirty-three thousand, two hundred thirty-one".