12222211200 has 192 divisors, whose sum is σ = 42625530720. Its totient is φ = 3067494400.

The previous prime is 12222211189. The next prime is 12222211237. The reversal of 12222211200 is 211222221.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12222211200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125755 + ... + 200645.

Almost surely, 2^12222211200 is an apocalyptic number.

12222211200 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 12222211200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21312765360).

12222211200 is an abundant number, since it is smaller than the sum of its proper divisors (30403319520).

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

12222211200 is a wasteful number, since it uses less digits than its factorization.

12222211200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74935 (or 74918 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12222211200 its reverse (211222221), we get a palindrome (12433433421).

The spelling of 12222211200 in words is "twelve billion, two hundred twenty-two million, two hundred eleven thousand, two hundred".