3220443221 has 2 divisors, whose sum is σ = 3220443222. Its totient is φ = 3220443220.

The previous prime is 3220443203. The next prime is 3220443241. The reversal of 3220443221 is 1223440223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2302656196 + 917787025 = 47986^2 + 30295^2 .

It is an emirp because it is prime and its reverse (1223440223) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3220443221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3220443241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610221610 + 1610221611.

It is an arithmetic number, because the mean of its divisors is an integer number (1610221611).

Almost surely, 2^3220443221 is an apocalyptic number.

It is an amenable number.

3220443221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220443221 is an equidigital number, since it uses as much as digits as its factorization.

3220443221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 3220443221 is about 56748.9490739696. The cubic root of 3220443221 is about 1476.7440018187.

Adding to 3220443221 its reverse (1223440223), we get a palindrome (4443883444).

The spelling of 3220443221 in words is "three billion, two hundred twenty million, four hundred forty-three thousand, two hundred twenty-one".