12222211212200 has 96 divisors (see below), whose sum is σ = 31306903060320. Its totient is φ = 4400436000000.

The previous prime is 12222211212187. The next prime is 12222211212221. The reversal of 12222211212200 is 221211222221.

12222211212200 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 (20).

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, 27280526 + ... + 27724925.

It is an arithmetic number, because the mean of its divisors is an integer number (326113573545).

Almost surely, 2^{12222211212200} is an apocalyptic number.

12222211212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222211212200 is an abundant number, since it is smaller than the sum of its proper divisors (19084691848120).

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

12222211212200 is a wasteful number, since it uses less digits than its factorization.

12222211212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55005579 (or 55005570 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12222211212200 its reverse (221211222221), we get a palindrome (12443422434421).

The spelling of 12222211212200 in words is "twelve trillion, two hundred twenty-two billion, two hundred eleven million, two hundred twelve thousand, two hundred".