3003221 has 4 divisors (see below), whose sum is σ = 3234252. Its totient is φ = 2772192.

The previous prime is 3003191. The next prime is 3003223. The reversal of 3003221 is 1223003.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1234321 + 1768900 = 1111^2 + 1330^2 .

It is a cyclic number.

It is not a de Polignac number, because 3003221 - 2⁶ = 3003157 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 (3003223) 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, 115496 + ... + 115521.

It is an arithmetic number, because the mean of its divisors is an integer number (808563).

Almost surely, 2^3003221 is an apocalyptic number.

It is an amenable number.

3003221 is a deficient number, since it is larger than the sum of its proper divisors (231031).

3003221 is a wasteful number, since it uses less digits than its factorization.

3003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231030.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 3003221 is about 1732.9803807314. The cubic root of 3003221 is about 144.2765550784.

Adding to 3003221 its reverse (1223003), we get a palindrome (4226224).

The spelling of 3003221 in words is "three million, three thousand, two hundred twenty-one".