12111220344 has 32 divisors (see below), whose sum is σ = 30692823120. Its totient is φ = 3981770496.

The previous prime is 12111220327. The next prime is 12111220349. The reversal of 12111220344 is 44302211121.

12111220344 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12111220344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111220349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3454647 + ... + 3458150.

Almost surely, 2^12111220344 is an apocalyptic number.

It is an amenable number.

12111220344 is an abundant number, since it is smaller than the sum of its proper divisors (18581602776).

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

12111220344 is a wasteful number, since it uses less digits than its factorization.

12111220344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912879 (or 6912875 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12111220344 its reverse (44302211121), we get a palindrome (56413431465).

The spelling of 12111220344 in words is "twelve billion, one hundred eleven million, two hundred twenty thousand, three hundred forty-four".