221302230 has 32 divisors (see below), whose sum is σ = 535189248. Its totient is φ = 58562400.

The previous prime is 221302223. The next prime is 221302241. The reversal of 221302230 is 32203122.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 24226 + ... + 32085.

It is an arithmetic number, because the mean of its divisors is an integer number (16724664).

Almost surely, 2^221302230 is an apocalyptic number.

221302230 is an abundant number, since it is smaller than the sum of its proper divisors (313887018).

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

221302230 is a wasteful number, since it uses less digits than its factorization.

221302230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56452.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 221302230 is about 14876.2303692837. The cubic root of 221302230 is about 604.8698397223.

Adding to 221302230 its reverse (32203122), we get a palindrome (253505352).

The spelling of 221302230 in words is "two hundred twenty-one million, three hundred two thousand, two hundred thirty".