1004304221 has 2 divisors, whose sum is σ = 1004304222. Its totient is φ = 1004304220.

The previous prime is 1004304211. The next prime is 1004304229. The reversal of 1004304221 is 1224034001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999192100 + 5112121 = 31610^2 + 2261^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004304221 - 2¹⁸ = 1004042077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1004304221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004304229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502152110 + 502152111.

It is an arithmetic number, because the mean of its divisors is an integer number (502152111).

Almost surely, 2^1004304221 is an apocalyptic number.

It is an amenable number.

1004304221 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004304221 is an equidigital number, since it uses as much as digits as its factorization.

1004304221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1004304221 is about 31690.7592367239. The cubic root of 1004304221 is about 1001.4326867617.

Adding to 1004304221 its reverse (1224034001), we get a palindrome (2228338222).

The spelling of 1004304221 in words is "one billion, four million, three hundred four thousand, two hundred twenty-one".