12211212200 has 96 divisors (see below), whose sum is σ = 32794061760. Its totient is φ = 4179225600.

The previous prime is 12211212161. The next prime is 12211212257. The reversal of 12211212200 is 221211221.

It is a super-2 number, since 2×12211212200² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125852 + ... + 200651.

It is an arithmetic number, because the mean of its divisors is an integer number (341604810).

Almost surely, 2^12211212200 is an apocalyptic number.

12211212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12211212200 is an abundant number, since it is smaller than the sum of its proper divisors (20582849560).

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

12211212200 is a wasteful number, since it uses less digits than its factorization.

12211212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326547 (or 326538 counting only the distinct ones).

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

Adding to 12211212200 its reverse (221211221), we get a palindrome (12432423421).

The spelling of 12211212200 in words is "twelve billion, two hundred eleven million, two hundred twelve thousand, two hundred".