221010230 has 32 divisors (see below), whose sum is σ = 455264064. Its totient is φ = 75672576.

The previous prime is 221010187. The next prime is 221010241. The reversal of 221010230 is 32010122.

It is a happy number.

221010230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 65054 + ... + 68366.

It is an arithmetic number, because the mean of its divisors is an integer number (14227002).

Almost surely, 2^221010230 is an apocalyptic number.

221010230 is an abundant number, since it is smaller than the sum of its proper divisors (234253834).

221010230 is a wasteful number, since it uses less digits than its factorization.

221010230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4280.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 221010230 is about 14866.4128154710. The cubic root of 221010230 is about 604.6036882662.

Adding to 221010230 its reverse (32010122), we get a palindrome (253020352).

The spelling of 221010230 in words is "two hundred twenty-one million, ten thousand, two hundred thirty".