233122121 has 2 divisors, whose sum is σ = 233122122. Its totient is φ = 233122120.

The previous prime is 233122093. The next prime is 233122133. The reversal of 233122121 is 121221332.

233122121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228010000 + 5112121 = 15100^2 + 2261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233122121 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 233122121.

It is not a weakly prime, because it can be changed into another prime (233122621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116561060 + 116561061.

It is an arithmetic number, because the mean of its divisors is an integer number (116561061).

Almost surely, 2^233122121 is an apocalyptic number.

It is an amenable number.

233122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

233122121 is an equidigital number, since it uses as much as digits as its factorization.

233122121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 17.

The square root of 233122121 is about 15268.3372048170. The cubic root of 233122121 is about 615.4524363702.

Adding to 233122121 its reverse (121221332), we get a palindrome (354343453).

The spelling of 233122121 in words is "two hundred thirty-three million, one hundred twenty-two thousand, one hundred twenty-one".