12022222112 has 96 divisors (see below), whose sum is σ = 25660333440. Its totient is φ = 5523804160.

The previous prime is 12022222111. The next prime is 12022222181. The reversal of 12022222112 is 21122222021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (12022222111) by changing a digit.

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, 4131314 + ... + 4134222.

It is an arithmetic number, because the mean of its divisors is an integer number (267295140).

Almost surely, 2^12022222112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12022222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12830166720).

12022222112 is an abundant number, since it is smaller than the sum of its proper divisors (13638111328).

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

12022222112 is a wasteful number, since it uses less digits than its factorization.

12022222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114 (or 3106 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 12022222112 its reverse (21122222021), we get a palindrome (33144444133).

Subtracting 12022222112 from its reverse (21122222021), we obtain a palindrome (9099999909).

The spelling of 12022222112 in words is "twelve billion, twenty-two million, two hundred twenty-two thousand, one hundred twelve".