221234330 has 16 divisors (see below), whose sum is σ = 411954120. Its totient is φ = 85442112.

The previous prime is 221234329. The next prime is 221234353. The reversal of 221234330 is 33432122.

221234330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 101747569 + 119486761 = 10087^2 + 10931^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381149 + ... + 381728.

Almost surely, 2^221234330 is an apocalyptic number.

221234330 is a deficient number, since it is larger than the sum of its proper divisors (190719790).

221234330 is a wasteful number, since it uses less digits than its factorization.

221234330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762913.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 221234330 is about 14873.9480300289. The cubic root of 221234330 is about 604.8079712942.

Adding to 221234330 its reverse (33432122), we get a palindrome (254666452).

The spelling of 221234330 in words is "two hundred twenty-one million, two hundred thirty-four thousand, three hundred thirty".