12111222200 has 144 divisors (see below), whose sum is σ = 35734041000. Its totient is φ = 3774892800.

The previous prime is 12111222199. The next prime is 12111222209. The reversal of 12111222200 is 222211121.

12111222200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111222209) 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 35 ways as a sum of consecutive naturals, for example, 51626 + ... + 163974.

Almost surely, 2^12111222200 is an apocalyptic number.

12111222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12111222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17867020500).

12111222200 is an abundant number, since it is smaller than the sum of its proper divisors (23622818800).

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

12111222200 is a wasteful number, since it uses less digits than its factorization.

12111222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112390 (or 112374 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12111222200 its reverse (222211121), we get a palindrome (12333433321).

The spelling of 12111222200 in words is "twelve billion, one hundred eleven million, two hundred twenty-two thousand, two hundred".