3220265221 has 4 divisors (see below), whose sum is σ = 3223278700. Its totient is φ = 3217251744.

The previous prime is 3220265201. The next prime is 3220265249. The reversal of 3220265221 is 1225620223.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1225620223 = 3727 ⋅328849.

It can be written as a sum of positive squares in 2 ways, for example, as 729756196 + 2490509025 = 27014^2 + 49905^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220265221 - 2⁷ = 3220265093 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 (3220265201) 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, 1505136 + ... + 1507273.

It is an arithmetic number, because the mean of its divisors is an integer number (805819675).

Almost surely, 2^3220265221 is an apocalyptic number.

It is an amenable number.

3220265221 is a deficient number, since it is larger than the sum of its proper divisors (3013479).

3220265221 is a wasteful number, since it uses less digits than its factorization.

3220265221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013478.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 3220265221 is about 56747.3807413170. The cubic root of 3220265221 is about 1476.7167938376.

Adding to 3220265221 its reverse (1225620223), we get a palindrome (4445885444).

The spelling of 3220265221 in words is "three billion, two hundred twenty million, two hundred sixty-five thousand, two hundred twenty-one".