11112212222 has 4 divisors (see below), whose sum is σ = 16668318336. Its totient is φ = 5556106110.

The previous prime is 11112212173. The next prime is 11112212269. The reversal of 11112212222 is 22221221111.

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 self number, because there is not a number n which added to its sum of digits gives 11112212222.

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, 2778053054 + ... + 2778053057.

It is an arithmetic number, because the mean of its divisors is an integer number (4167079584).

Almost surely, 2^11112212222 is an apocalyptic number.

11112212222 is a deficient number, since it is larger than the sum of its proper divisors (5556106114).

11112212222 is an equidigital number, since it uses as much as digits as its factorization.

11112212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556106113.

The product of its digits is 64, while the sum is 17.

Adding to 11112212222 its reverse (22221221111), we get a palindrome (33333433333).

The spelling of 11112212222 in words is "eleven billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-two".