2204433221 has 2 divisors, whose sum is σ = 2204433222. Its totient is φ = 2204433220.

The previous prime is 2204433193. The next prime is 2204433223. The reversal of 2204433221 is 1223344022.

2204433221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1254930625 + 949502596 = 35425^2 + 30814^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204433221 - 2²² = 2200238917 is a prime.

Together with 2204433223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2204433223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102216610 + 1102216611.

It is an arithmetic number, because the mean of its divisors is an integer number (1102216611).

Almost surely, 2^2204433221 is an apocalyptic number.

It is an amenable number.

2204433221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2204433221 is an equidigital number, since it uses as much as digits as its factorization.

2204433221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 2204433221 is about 46951.3921092868. The cubic root of 2204433221 is about 1301.4644681771.

Adding to 2204433221 its reverse (1223344022), we get a palindrome (3427777243).

The spelling of 2204433221 in words is "two billion, two hundred four million, four hundred thirty-three thousand, two hundred twenty-one".