221233230 has 48 divisors (see below), whose sum is σ = 587456064. Its totient is φ = 57739200.

The previous prime is 221233163. The next prime is 221233241. The reversal of 221233230 is 32332122.

It is a happy number.

221233230 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21921 + ... + 30380.

It is an arithmetic number, because the mean of its divisors is an integer number (12238668).

Almost surely, 2^221233230 is an apocalyptic number.

221233230 is an abundant number, since it is smaller than the sum of its proper divisors (366222834).

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

221233230 is a wasteful number, since it uses less digits than its factorization.

221233230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52361 (or 52358 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 221233230 is about 14873.9110525779. The cubic root of 221233230 is about 604.8069689033.

Adding to 221233230 its reverse (32332122), we get a palindrome (253565352).

The spelling of 221233230 in words is "two hundred twenty-one million, two hundred thirty-three thousand, two hundred thirty".