2221205344 has 24 divisors (see below), whose sum is σ = 4374049680. Its totient is φ = 1110335616.

The previous prime is 2221205309. The next prime is 2221205351. The reversal of 2221205344 is 4435021222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246877 + ... + 255715.

It is an arithmetic number, because the mean of its divisors is an integer number (182252070).

Almost surely, 2^2221205344 is an apocalyptic number.

It is an amenable number.

2221205344 is a deficient number, since it is larger than the sum of its proper divisors (2152844336).

2221205344 is an equidigital number, since it uses as much as digits as its factorization.

2221205344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16702 (or 16694 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2221205344 is about 47129.6652226599. The cubic root of 2221205344 is about 1304.7568028385.

Adding to 2221205344 its reverse (4435021222), we get a palindrome (6656226566).

The spelling of 2221205344 in words is "two billion, two hundred twenty-one million, two hundred five thousand, three hundred forty-four".