3220232221 has 4 divisors (see below), whose sum is σ = 3220350844. Its totient is φ = 3220113600.

The previous prime is 3220232201. The next prime is 3220232261. The reversal of 3220232221 is 1222320223.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2688422500 + 531809721 = 51850^2 + 23061^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220232221 - 2¹⁷ = 3220101149 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 (3220232201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3781 + ... + 80341.

It is an arithmetic number, because the mean of its divisors is an integer number (805087711).

Almost surely, 2^3220232221 is an apocalyptic number.

It is an amenable number.

3220232221 is a deficient number, since it is larger than the sum of its proper divisors (118623).

3220232221 is an equidigital number, since it uses as much as digits as its factorization.

3220232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118622.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 3220232221 is about 56747.0899782535. The cubic root of 3220232221 is about 1476.7117495511.

Adding to 3220232221 its reverse (1222320223), we get a palindrome (4442552444).

The spelling of 3220232221 in words is "three billion, two hundred twenty million, two hundred thirty-two thousand, two hundred twenty-one".