222312231 has 24 divisors (see below), whose sum is σ = 337175280. Its totient is φ = 140950656.

The previous prime is 222312221. The next prime is 222312257. The reversal of 222312231 is 132213222.

It is not a de Polignac number, because 222312231 - 2⁵ = 222312199 is a prime.

It is a super-2 number, since 2×222312231² = 98845456104394722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222312221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11131 + ... + 23843.

It is an arithmetic number, because the mean of its divisors is an integer number (14048970).

Almost surely, 2^222312231 is an apocalyptic number.

222312231 is a deficient number, since it is larger than the sum of its proper divisors (114863049).

222312231 is a wasteful number, since it uses less digits than its factorization.

222312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12815 (or 12812 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 222312231 is about 14910.1385305436. The cubic root of 222312231 is about 605.7886316405.

Adding to 222312231 its reverse (132213222), we get a palindrome (354525453).

Subtracting from 222312231 its reverse (132213222), we obtain a palindrome (90099009).

The spelling of 222312231 in words is "two hundred twenty-two million, three hundred twelve thousand, two hundred thirty-one".