8003221 has 4 divisors (see below), whose sum is σ = 8013600. Its totient is φ = 7992844.

The previous prime is 8003201. The next prime is 8003227. The reversal of 8003221 is 1223008.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8003221 - 2¹¹ = 8001173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8003195 and 8003204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8003227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3931 + ... + 5608.

It is an arithmetic number, because the mean of its divisors is an integer number (2003400).

Almost surely, 2^8003221 is an apocalyptic number.

It is an amenable number.

8003221 is a deficient number, since it is larger than the sum of its proper divisors (10379).

8003221 is an equidigital number, since it uses as much as digits as its factorization.

8003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10378.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 8003221 is about 2828.9964651798. The cubic root of 8003221 is about 200.0268380651.

Adding to 8003221 its reverse (1223008), we get a palindrome (9226229).

The spelling of 8003221 in words is "eight million, three thousand, two hundred twenty-one".