221325353 has 2 divisors, whose sum is σ = 221325354. Its totient is φ = 221325352.

The previous prime is 221325317. The next prime is 221325367. The reversal of 221325353 is 353523122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177076249 + 44249104 = 13307^2 + 6652^2 .

It is a cyclic number.

It is not a de Polignac number, because 221325353 - 2¹⁰ = 221324329 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221325253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110662676 + 110662677.

It is an arithmetic number, because the mean of its divisors is an integer number (110662677).

Almost surely, 2^221325353 is an apocalyptic number.

It is an amenable number.

221325353 is a deficient number, since it is larger than the sum of its proper divisors (1).

221325353 is an equidigital number, since it uses as much as digits as its factorization.

221325353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5400, while the sum is 26.

The square root of 221325353 is about 14877.0075283976. The cubic root of 221325353 is about 604.8909058124.

Adding to 221325353 its reverse (353523122), we get a palindrome (574848475).

The spelling of 221325353 in words is "two hundred twenty-one million, three hundred twenty-five thousand, three hundred fifty-three".