2204105221 has 2 divisors, whose sum is σ = 2204105222. Its totient is φ = 2204105220.

The previous prime is 2204105219. The next prime is 2204105227. The reversal of 2204105221 is 1225014022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2163273121 + 40832100 = 46511^2 + 6390^2 .

It is a cyclic number.

It is not a de Polignac number, because 2204105221 - 2¹ = 2204105219 is a prime.

Together with 2204105219, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2204105227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1102052610 + 1102052611.

It is an arithmetic number, because the mean of its divisors is an integer number (1102052611).

Almost surely, 2^2204105221 is an apocalyptic number.

It is an amenable number.

2204105221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2204105221 is an equidigital number, since it uses as much as digits as its factorization.

2204105221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 2204105221 is about 46947.8990051738. The cubic root of 2204105221 is about 1301.3999162074.

Adding to 2204105221 its reverse (1225014022), we get a palindrome (3429119243).

The spelling of 2204105221 in words is "two billion, two hundred four million, one hundred five thousand, two hundred twenty-one".