12212211200 has 180 divisors, whose sum is σ = 35198385552. Its totient is φ = 4186828800.

The previous prime is 12212211127. The next prime is 12212211223. The reversal of 12212211200 is 211221221.

12212211200 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 an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 617465 + ... + 636935.

Almost surely, 2^12212211200 is an apocalyptic number.

12212211200 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 12212211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17599192776).

12212211200 is an abundant number, since it is smaller than the sum of its proper divisors (22986174352).

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

12212211200 is an equidigital number, since it uses as much as digits as its factorization.

12212211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19513 (or 19485 counting only the distinct ones).

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

Adding to 12212211200 its reverse (211221221), we get a palindrome (12423432421).

The spelling of 12212211200 in words is "twelve billion, two hundred twelve million, two hundred eleven thousand, two hundred".