12011212200 has 192 divisors, whose sum is σ = 40584277440. Its totient is φ = 2920826880.

The previous prime is 12011212177. The next prime is 12011212201. The reversal of 12011212200 is 221211021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (12011212201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 638124 + ... + 656676.

It is an arithmetic number, because the mean of its divisors is an integer number (211376445).

Almost surely, 2^12011212200 is an apocalyptic number.

12011212200 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 12011212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20292138720).

12011212200 is an abundant number, since it is smaller than the sum of its proper divisors (28573065240).

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

12011212200 is a wasteful number, since it uses less digits than its factorization.

12011212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18668 (or 18659 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12011212200 its reverse (221211021), we get a palindrome (12232423221).

The spelling of 12011212200 in words is "twelve billion, eleven million, two hundred twelve thousand, two hundred".