11221222112 has 24 divisors (see below), whose sum is σ = 22306270896. Its totient is φ = 5556137472.

The previous prime is 11221222073. The next prime is 11221222123. The reversal of 11221222112 is 21122212211.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1698953 + ... + 1705544.

It is an arithmetic number, because the mean of its divisors is an integer number (929427954).

Almost surely, 2^11221222112 is an apocalyptic number.

It is an amenable number.

11221222112 is a deficient number, since it is larger than the sum of its proper divisors (11085048784).

11221222112 is a wasteful number, since it uses less digits than its factorization.

11221222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404610 (or 3404602 counting only the distinct ones).

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

Adding to 11221222112 its reverse (21122212211), we get a palindrome (32343434323).

Subtracting 11221222112 from its reverse (21122212211), we obtain a palindrome (9900990099).

The spelling of 11221222112 in words is "eleven billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred twelve".