10304221 has 4 divisors (see below), whose sum is σ = 10331100. Its totient is φ = 10277344.

The previous prime is 10304197. The next prime is 10304237. The reversal of 10304221 is 12240301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12240301 = 23 ⋅532187.

It can be written as a sum of positive squares in 2 ways, for example, as 2402500 + 7901721 = 1550^2 + 2811^2 .

It is a cyclic number.

It is not a de Polignac number, because 10304221 - 2¹³ = 10296029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10304521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12856 + ... + 13633.

It is an arithmetic number, because the mean of its divisors is an integer number (2582775).

Almost surely, 2^10304221 is an apocalyptic number.

It is an amenable number.

10304221 is a deficient number, since it is larger than the sum of its proper divisors (26879).

10304221 is an equidigital number, since it uses as much as digits as its factorization.

10304221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26878.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 10304221 is about 3210.0188472967. The cubic root of 10304221 is about 217.6064287339.

Adding to 10304221 its reverse (12240301), we get a palindrome (22544522).

The spelling of 10304221 in words is "ten million, three hundred four thousand, two hundred twenty-one".