221324222 has 32 divisors (see below), whose sum is σ = 394122240. Its totient is φ = 91245600.

The previous prime is 221324203. The next prime is 221324227. The reversal of 221324222 is 222423122.

221324222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221324222² = 97968822487810568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221324194 and 221324203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221324227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35972 + ... + 41672.

It is an arithmetic number, because the mean of its divisors is an integer number (12316320).

Almost surely, 2^221324222 is an apocalyptic number.

221324222 is a deficient number, since it is larger than the sum of its proper divisors (172798018).

221324222 is a wasteful number, since it uses less digits than its factorization.

221324222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5816.

The product of its digits is 768, while the sum is 20.

The square root of 221324222 is about 14876.9695166724. The cubic root of 221324222 is about 604.8898754548.

Adding to 221324222 its reverse (222423122), we get a palindrome (443747344).

The spelling of 221324222 in words is "two hundred twenty-one million, three hundred twenty-four thousand, two hundred twenty-two".