2205304221 has 4 divisors (see below), whose sum is σ = 2940405632. Its totient is φ = 1470202812.

The previous prime is 2205304201. The next prime is 2205304237. The reversal of 2205304221 is 1224035022.

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 not a de Polignac number, because 2205304221 - 2¹⁴ = 2205287837 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 (2205304201) 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, 367550701 + ... + 367550706.

It is an arithmetic number, because the mean of its divisors is an integer number (735101408).

Almost surely, 2^2205304221 is an apocalyptic number.

It is an amenable number.

2205304221 is a deficient number, since it is larger than the sum of its proper divisors (735101411).

2205304221 is an equidigital number, since it uses as much as digits as its factorization.

2205304221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735101410.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 2205304221 is about 46960.6667435632. Note that the first 3 decimals coincide. The cubic root of 2205304221 is about 1301.6358540730.

Adding to 2205304221 its reverse (1224035022), we get a palindrome (3429339243).

The spelling of 2205304221 in words is "two billion, two hundred five million, three hundred four thousand, two hundred twenty-one".