22112231 has 4 divisors (see below), whose sum is σ = 22582752. Its totient is φ = 21641712.

The previous prime is 22112221. The next prime is 22112249. The reversal of 22112231 is 13221122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13221122 = 2 ⋅6610561.

It is a cyclic number.

It is not a de Polignac number, because 22112231 - 2¹⁰ = 22111207 is a prime.

It is a super-2 number, since 2×22112231² = 977901519594722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112201) 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, 235190 + ... + 235283.

It is an arithmetic number, because the mean of its divisors is an integer number (5645688).

Almost surely, 2^22112231 is an apocalyptic number.

22112231 is a deficient number, since it is larger than the sum of its proper divisors (470521).

22112231 is an equidigital number, since it uses as much as digits as its factorization.

22112231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470520.

The product of its digits is 48, while the sum is 14.

The square root of 22112231 is about 4702.3644052753. The cubic root of 22112231 is about 280.6796034143.

Adding to 22112231 its reverse (13221122), we get a palindrome (35333353).

The spelling of 22112231 in words is "twenty-two million, one hundred twelve thousand, two hundred thirty-one".