410243221 has 2 divisors, whose sum is σ = 410243222. Its totient is φ = 410243220.

The previous prime is 410243219. The next prime is 410243233. The reversal of 410243221 is 122342014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221592996 + 188650225 = 14886^2 + 13735^2 .

It is a cyclic number.

It is not a de Polignac number, because 410243221 - 2¹ = 410243219 is a prime.

Together with 410243219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (410243321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205121610 + 205121611.

It is an arithmetic number, because the mean of its divisors is an integer number (205121611).

Almost surely, 2^410243221 is an apocalyptic number.

It is an amenable number.

410243221 is a deficient number, since it is larger than the sum of its proper divisors (1).

410243221 is an equidigital number, since it uses as much as digits as its factorization.

410243221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 410243221 is about 20254.4617553763. The cubic root of 410243221 is about 743.0427558213.

Adding to 410243221 its reverse (122342014), we get a palindrome (532585235).

The spelling of 410243221 in words is "four hundred ten million, two hundred forty-three thousand, two hundred twenty-one".