222222231 has 64 divisors (see below), whose sum is σ = 415411200. Its totient is φ = 114048000.

The previous prime is 222222227. The next prime is 222222241. The reversal of 222222231 is 132222222.

It is not a de Polignac number, because 222222231 - 2² = 222222227 is a prime.

It is a super-2 number, since 2×222222231² = 98765439901234722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 184431 + ... + 185631.

It is an arithmetic number, because the mean of its divisors is an integer number (6490800).

Almost surely, 2^222222231 is an apocalyptic number.

222222231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222222231 is a deficient number, since it is larger than the sum of its proper divisors (193188969).

222222231 is a wasteful number, since it uses less digits than its factorization.

222222231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1311 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 222222231 is about 14907.1201444142. The cubic root of 222222231 is about 605.7068722525.

Adding to 222222231 its reverse (132222222), we get a palindrome (354444453).

Subtracting from 222222231 its reverse (132222222), we obtain a palindrome (90000009).

The spelling of 222222231 in words is "two hundred twenty-two million, two hundred twenty-two thousand, two hundred thirty-one".