221335230 has 16 divisors (see below), whose sum is σ = 531204624. Its totient is φ = 59022720.

The previous prime is 221335217. The next prime is 221335241. The reversal of 221335230 is 32533122.

It is a junction number, because it is equal to n+sod(n) for n = 221335197 and 221335206.

It is a congruent number.

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, 3688891 + ... + 3688950.

It is an arithmetic number, because the mean of its divisors is an integer number (33200289).

Almost surely, 2^221335230 is an apocalyptic number.

221335230 is an abundant number, since it is smaller than the sum of its proper divisors (309869394).

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

221335230 is a wasteful number, since it uses less digits than its factorization.

221335230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377851.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 221335230 is about 14877.3394798936. The cubic root of 221335230 is about 604.8999037553.

Adding to 221335230 its reverse (32533122), we get a palindrome (253868352).

The spelling of 221335230 in words is "two hundred twenty-one million, three hundred thirty-five thousand, two hundred thirty".