221234 has 16 divisors (see below), whose sum is σ = 365568. Its totient is φ = 99792.

The previous prime is 221233. The next prime is 221239. The reversal of 221234 is 432122.

221234 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1679 + ... + 1805.

It is an arithmetic number, because the mean of its divisors is an integer number (22848).

2²²¹²³⁴ is an apocalyptic number.

221234 is a deficient number, since it is larger than the sum of its proper divisors (144334).

221234 is a wasteful number, since it uses less digits than its factorization.

221234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209.

The product of its digits is 96, while the sum is 14.

The square root of 221234 is about 470.3551849401. The cubic root of 221234 is about 60.4807670577.

Adding to 221234 its reverse (432122), we get a palindrome (653356).

The spelling of 221234 in words is "two hundred twenty-one thousand, two hundred thirty-four".