12111212300 has 144 divisors (see below), whose sum is σ = 29623853952. Its totient is φ = 4259673600.

The previous prime is 12111212221. The next prime is 12111212303. The reversal of 12111212300 is 321211121.

12111212300 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12111212303) 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 47 ways as a sum of consecutive naturals, for example, 5059904 + ... + 5062296.

It is an arithmetic number, because the mean of its divisors is an integer number (205721208).

Almost surely, 2^12111212300 is an apocalyptic number.

12111212300 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 12111212300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14811926976).

12111212300 is an abundant number, since it is smaller than the sum of its proper divisors (17512641652).

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

12111212300 is a wasteful number, since it uses less digits than its factorization.

12111212300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2568 (or 2561 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12111212300 its reverse (321211121), we get a palindrome (12432423421).

The spelling of 12111212300 in words is "twelve billion, one hundred eleven million, two hundred twelve thousand, three hundred".