11112222 has 32 divisors (see below), whose sum is σ = 24499584. Its totient is φ = 3332000.

The previous prime is 11112217. The next prime is 11112239. The reversal of 11112222 is 22221111.

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

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11112198 and 11112207.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5833 + ... + 7499.

It is an arithmetic number, because the mean of its divisors is an integer number (765612).

Almost surely, 2^11112222 is an apocalyptic number.

It is a pronic number, being equal to 3333×3334.

It is a practical number, because each smaller number is the sum of distinct divisors of 11112222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12249792).

11112222 is an abundant number, since it is smaller than the sum of its proper divisors (13387362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11112222 is a wasteful number, since it uses less digits than its factorization.

11112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784.

The product of its digits is 16, while the sum is 12.

The square root of 11112222 is about 3333.4999625019. The cubic root of 11112222 is about 223.1517531025.

Adding to 11112222 its reverse (22221111), we get a palindrome (33333333).

Subtracting 11112222 from its reverse (22221111), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 1111 and 2222, that multiplied together give a palindrome (2468642).

The spelling of 11112222 in words is "eleven million, one hundred twelve thousand, two hundred twenty-two".