22112222 has 8 divisors (see below), whose sum is σ = 36183672. Its totient is φ = 10051000.

The previous prime is 22112221. The next prime is 22112249. The reversal of 22112222 is 22221122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 22112197 and 22112206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112221) 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, 502529 + ... + 502572.

It is an arithmetic number, because the mean of its divisors is an integer number (4522959).

Almost surely, 2^22112222 is an apocalyptic number.

22112222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22112222 is a deficient number, since it is larger than the sum of its proper divisors (14071450).

22112222 is a wasteful number, since it uses less digits than its factorization.

22112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005114.

The product of its digits is 64, while the sum is 14.

The square root of 22112222 is about 4702.3634483098. The cubic root of 22112222 is about 280.6795653341.

Adding to 22112222 its reverse (22221122), we get a palindrome (44333344).

Subtracting 22112222 from its reverse (22221122), we obtain a square (108900 = 330²).

It can be divided in two parts, 221122 and 22, that multiplied together give a palindrome (4864684).

The spelling of 22112222 in words is "twenty-two million, one hundred twelve thousand, two hundred twenty-two".