11111222 has 4 divisors (see below), whose sum is σ = 16666836. Its totient is φ = 5555610.

The previous prime is 11111209. The next prime is 11111267. The reversal of 11111222 is 22211111.

11111222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 nialpdrome in base 15.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2777804 + ... + 2777807.

It is an arithmetic number, because the mean of its divisors is an integer number (4166709).

Almost surely, 2^11111222 is an apocalyptic number.

11111222 is a deficient number, since it is larger than the sum of its proper divisors (5555614).

11111222 is an equidigital number, since it uses as much as digits as its factorization.

11111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555613.

The product of its digits is 8, while the sum is 11.

The square root of 11111222 is about 3333.3499666252. The cubic root of 11111222 is about 223.1450590183.

Adding to 11111222 its reverse (22211111), we get a palindrome (33322333).

It can be divided in two parts, 11111 and 222, that multiplied together give a palindrome (2466642).

The spelling of 11111222 in words is "eleven million, one hundred eleven thousand, two hundred twenty-two".