2004422221 has 4 divisors (see below), whose sum is σ = 2005182112. Its totient is φ = 2003662332.

The previous prime is 2004422191. The next prime is 2004422257. The reversal of 2004422221 is 1222244002.

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 2004422221 - 2⁷ = 2004422093 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 (2004422821) 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, 375975 + ... + 381268.

It is an arithmetic number, because the mean of its divisors is an integer number (501295528).

Almost surely, 2^2004422221 is an apocalyptic number.

It is an amenable number.

2004422221 is a deficient number, since it is larger than the sum of its proper divisors (759891).

2004422221 is an equidigital number, since it uses as much as digits as its factorization.

2004422221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759890.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 2004422221 is about 44770.7741836122. The cubic root of 2004422221 is about 1260.8489745368.

Adding to 2004422221 its reverse (1222244002), we get a palindrome (3226666223).

The spelling of 2004422221 in words is "two billion, four million, four hundred twenty-two thousand, two hundred twenty-one".