233132021 has 2 divisors, whose sum is σ = 233132022. Its totient is φ = 233132020.

The previous prime is 233132017. The next prime is 233132023. The reversal of 233132021 is 120231332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229855921 + 3276100 = 15161^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 233132021 - 2² = 233132017 is a prime.

Together with 233132023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233132023) 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 as a sum of consecutive naturals, namely, 116566010 + 116566011.

It is an arithmetic number, because the mean of its divisors is an integer number (116566011).

Almost surely, 2^233132021 is an apocalyptic number.

It is an amenable number.

233132021 is a deficient number, since it is larger than the sum of its proper divisors (1).

233132021 is an equidigital number, since it uses as much as digits as its factorization.

233132021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 233132021 is about 15268.6614017077. The cubic root of 233132021 is about 615.4611483889.

Adding to 233132021 its reverse (120231332), we get a palindrome (353363353).

The spelling of 233132021 in words is "two hundred thirty-three million, one hundred thirty-two thousand, twenty-one".