2224613221 has 4 divisors (see below), whose sum is σ = 2225290444. Its totient is φ = 2223936000.

The previous prime is 2224613207. The next prime is 2224613243. The reversal of 2224613221 is 1223164222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1521780100 + 702833121 = 39010^2 + 26511^2 .

It is a cyclic number.

It is not a de Polignac number, because 2224613221 - 2⁷ = 2224613093 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 (2224613201) 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, 333660 + ... + 340261.

It is an arithmetic number, because the mean of its divisors is an integer number (556322611).

Almost surely, 2^2224613221 is an apocalyptic number.

It is an amenable number.

2224613221 is a deficient number, since it is larger than the sum of its proper divisors (677223).

2224613221 is an equidigital number, since it uses as much as digits as its factorization.

2224613221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677222.

The product of its digits is 2304, while the sum is 25.

The square root of 2224613221 is about 47165.8056328947. The cubic root of 2224613221 is about 1305.4237348211.

Adding to 2224613221 its reverse (1223164222), we get a palindrome (3447777443).

The spelling of 2224613221 in words is "two billion, two hundred twenty-four million, six hundred thirteen thousand, two hundred twenty-one".