4443242221 has 8 divisors (see below), whose sum is σ = 5014317600. Its totient is φ = 3900024240.

The previous prime is 4443242203. The next prime is 4443242231. The reversal of 4443242221 is 1222423444.

4443242221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4443242221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4443242221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4443242231) 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 7 ways as a sum of consecutive naturals, for example, 6964011 + ... + 6964648.

It is an arithmetic number, because the mean of its divisors is an integer number (626789700).

Almost surely, 2^4443242221 is an apocalyptic number.

It is an amenable number.

4443242221 is a deficient number, since it is larger than the sum of its proper divisors (571075379).

4443242221 is a wasteful number, since it uses less digits than its factorization.

4443242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13928699.

The product of its digits is 12288, while the sum is 28.

The square root of 4443242221 is about 66657.6493809975. The cubic root of 4443242221 is about 1643.9931226193.

Adding to 4443242221 its reverse (1222423444), we get a palindrome (5665665665).

The spelling of 4443242221 in words is "four billion, four hundred forty-three million, two hundred forty-two thousand, two hundred twenty-one".