12111212244 has 12 divisors (see below), whose sum is σ = 28259495264. Its totient is φ = 4037070744.

The previous prime is 12111212221. The next prime is 12111212303. The reversal of 12111212244 is 44221211121.

It is a tau number, because it is divible by the number of its divisors (12).

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 12111212244.

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, 504633832 + ... + 504633855.

Almost surely, 2^12111212244 is an apocalyptic number.

It is an amenable number.

12111212244 is an abundant number, since it is smaller than the sum of its proper divisors (16148283020).

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

12111212244 is a wasteful number, since it uses less digits than its factorization.

12111212244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009267694 (or 1009267692 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 12111212244 its reverse (44221211121), we get a palindrome (56332423365).

The spelling of 12111212244 in words is "twelve billion, one hundred eleven million, two hundred twelve thousand, two hundred forty-four".