233253221 has 2 divisors, whose sum is σ = 233253222. Its totient is φ = 233253220.

The previous prime is 233253193. The next prime is 233253227. The reversal of 233253221 is 122352332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224580196 + 8673025 = 14986^2 + 2945^2 .

It is a cyclic number.

It is not a de Polignac number, because 233253221 - 2¹⁰ = 233252197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233253227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116626610 + 116626611.

It is an arithmetic number, because the mean of its divisors is an integer number (116626611).

Almost surely, 2^233253221 is an apocalyptic number.

It is an amenable number.

233253221 is a deficient number, since it is larger than the sum of its proper divisors (1).

233253221 is an equidigital number, since it uses as much as digits as its factorization.

233253221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 23.

The square root of 233253221 is about 15272.6297997431. The cubic root of 233253221 is about 615.5677846317.

The spelling of 233253221 in words is "two hundred thirty-three million, two hundred fifty-three thousand, two hundred twenty-one".