234500221 has 2 divisors, whose sum is σ = 234500222. Its totient is φ = 234500220.

The previous prime is 234500173. The next prime is 234500239. The reversal of 234500221 is 122005432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150062500 + 84437721 = 12250^2 + 9189^2 .

It is a cyclic number.

It is not a de Polignac number, because 234500221 - 2⁹ = 234499709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234500281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117250110 + 117250111.

It is an arithmetic number, because the mean of its divisors is an integer number (117250111).

Almost surely, 2^234500221 is an apocalyptic number.

It is an amenable number.

234500221 is a deficient number, since it is larger than the sum of its proper divisors (1).

234500221 is an equidigital number, since it uses as much as digits as its factorization.

234500221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 234500221 is about 15313.4000470176. The cubic root of 234500221 is about 616.6628022483.

Adding to 234500221 its reverse (122005432), we get a palindrome (356505653).

The spelling of 234500221 in words is "two hundred thirty-four million, five hundred thousand, two hundred twenty-one".