221230 has 8 divisors (see below), whose sum is σ = 398232. Its totient is φ = 88488.

The previous prime is 221227. The next prime is 221233. The reversal of 221230 is 32122.

It is an interprime number because it is at equal distance from previous prime (221227) and next prime (221233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 22123 = 221230 / (2 + 2 + 1 + 2 + 3 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11052 + ... + 11071.

It is an arithmetic number, because the mean of its divisors is an integer number (49779).

2²²¹²³⁰ is an apocalyptic number.

221230 is a deficient number, since it is larger than the sum of its proper divisors (177002).

221230 is a wasteful number, since it uses less digits than its factorization.

221230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22130.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 221230 is about 470.3509328151. The cubic root of 221230 is about 60.4804025500.

Adding to 221230 its reverse (32122), we get a palindrome (253352).

The spelling of 221230 in words is "two hundred twenty-one thousand, two hundred thirty".