222231 has 4 divisors (see below), whose sum is σ = 296312. Its totient is φ = 148152.

The previous prime is 222199. The next prime is 222247. The reversal of 222231 is 132222.

222231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 222231 - 2⁵ = 222199 is a prime.

It is a super-2 number, since 2×222231² = 98773234722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

222231 is a lucky number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222731) 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, 37036 + ... + 37041.

It is an arithmetic number, because the mean of its divisors is an integer number (74078).

2²²²²³¹ is an apocalyptic number.

222231 is a deficient number, since it is larger than the sum of its proper divisors (74081).

222231 is an equidigital number, since it uses as much as digits as its factorization.

222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74080.

The product of its digits is 48, while the sum is 12.

The square root of 222231 is about 471.4138309384. The cubic root of 222231 is about 60.5714839313.

Adding to 222231 its reverse (132222), we get a palindrome (354453).

Subtracting from 222231 its reverse (132222), we obtain a palindrome (90009).

The spelling of 222231 in words is "two hundred twenty-two thousand, two hundred thirty-one".