12221213223200 has 72 divisors (see below), whose sum is σ = 29851020631152. Its totient is φ = 4885866328320.

The previous prime is 12221213223181. The next prime is 12221213223223. The reversal of 12221213223200 is 232231212221.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 2597594 + ... + 5584793.

It is an arithmetic number, because the mean of its divisors is an integer number (414597508766).

Almost surely, 2^{12221213223200} is an apocalyptic number.

12221213223200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221213223200 is an abundant number, since it is smaller than the sum of its proper divisors (17629807407952).

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

12221213223200 is a wasteful number, since it uses less digits than its factorization.

12221213223200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8184274 (or 8184261 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 12221213223200 its reverse (232231212221), we get a palindrome (12453444435421).

The spelling of 12221213223200 in words is "twelve trillion, two hundred twenty-one billion, two hundred thirteen million, two hundred twenty-three thousand, two hundred".