12211211200 has 42 divisors (see below), whose sum is σ = 30047215496. Its totient is φ = 4884483840.

The previous prime is 12211211191. The next prime is 12211211219. The reversal of 12211211200 is 211211221.

12211211200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12211211200² (a number of 21 digits) contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 3814404 + ... + 3817603.

Almost surely, 2^12211211200 is an apocalyptic number.

12211211200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211211200 is an abundant number, since it is smaller than the sum of its proper divisors (17836004296).

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

12211211200 is an equidigital number, since it uses as much as digits as its factorization.

12211211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7632029 (or 7632014 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12211211200 its reverse (211211221), we get a palindrome (12422422421).

The spelling of 12211211200 in words is "twelve billion, two hundred eleven million, two hundred eleven thousand, two hundred".