221223344 has 20 divisors (see below), whose sum is σ = 428893680. Its totient is φ = 110541120.

The previous prime is 221223337. The next prime is 221223349. The reversal of 221223344 is 443322122.

221223344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (221223349) 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, 29234 + ... + 36014.

It is an arithmetic number, because the mean of its divisors is an integer number (21444684).

Almost surely, 2^221223344 is an apocalyptic number.

It is an amenable number.

221223344 is a deficient number, since it is larger than the sum of its proper divisors (207670336).

221223344 is a wasteful number, since it uses less digits than its factorization.

221223344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8828 (or 8822 counting only the distinct ones).

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

The square root of 221223344 is about 14873.5787220158. The cubic root of 221223344 is about 604.7979599933.

Adding to 221223344 its reverse (443322122), we get a palindrome (664545466).

The spelling of 221223344 in words is "two hundred twenty-one million, two hundred twenty-three thousand, three hundred forty-four".