4442330221 has 4 divisors (see below), whose sum is σ = 5076948832. Its totient is φ = 3807711612.

The previous prime is 4442330219. The next prime is 4442330237. The reversal of 4442330221 is 1220332444.

It is a happy number.

4442330221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4442330221 - 2¹ = 4442330219 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 (4442330281) 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, 317309295 + ... + 317309308.

It is an arithmetic number, because the mean of its divisors is an integer number (1269237208).

Almost surely, 2^4442330221 is an apocalyptic number.

It is an amenable number.

4442330221 is a deficient number, since it is larger than the sum of its proper divisors (634618611).

4442330221 is an equidigital number, since it uses as much as digits as its factorization.

4442330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634618610.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 4442330221 is about 66650.8081046284. The cubic root of 4442330221 is about 1643.8806353674.

Adding to 4442330221 its reverse (1220332444), we get a palindrome (5662662665).

The spelling of 4442330221 in words is "four billion, four hundred forty-two million, three hundred thirty thousand, two hundred twenty-one".