121321233 has 20 divisors (see below), whose sum is σ = 197710128. Its totient is φ = 73527480.

The previous prime is 121321229. The next prime is 121321237. The reversal of 121321233 is 332123121.

It is an interprime number because it is at equal distance from previous prime (121321229) and next prime (121321237).

It is not a de Polignac number, because 121321233 - 2² = 121321229 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121321237) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 67191 + ... + 68972.

Almost surely, 2^121321233 is an apocalyptic number.

It is an amenable number.

121321233 is a deficient number, since it is larger than the sum of its proper divisors (76388895).

121321233 is a wasteful number, since it uses less digits than its factorization.

121321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136186 (or 136177 counting only the distinct ones).

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

The square root of 121321233 is about 11014.5918217608. The cubic root of 121321233 is about 495.0460563207.

Adding to 121321233 its reverse (332123121), we get a palindrome (453444354).

The spelling of 121321233 in words is "one hundred twenty-one million, three hundred twenty-one thousand, two hundred thirty-three".