221304230 has 32 divisors (see below), whose sum is σ = 465848064. Its totient is φ = 74110176.

The previous prime is 221304211. The next prime is 221304253. The reversal of 221304230 is 32403122.

221304230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 221304199 and 221304208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33752 + ... + 39771.

It is an arithmetic number, because the mean of its divisors is an integer number (14557752).

Almost surely, 2^221304230 is an apocalyptic number.

221304230 is an abundant number, since it is smaller than the sum of its proper divisors (244543834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221304230 is a wasteful number, since it uses less digits than its factorization.

221304230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73580.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 221304230 is about 14876.2975904625. The cubic root of 221304230 is about 604.8716618699.

Adding to 221304230 its reverse (32403122), we get a palindrome (253707352).

The spelling of 221304230 in words is "two hundred twenty-one million, three hundred four thousand, two hundred thirty".