12221000222200 has 288 divisors, whose sum is σ = 36414657594000. Its totient is φ = 3771425280000.

The previous prime is 12221000222161. The next prime is 12221000222201. The reversal of 12221000222200 is 222200012221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221000222201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 10326576 + ... + 11449024.

Almost surely, 2^{12221000222200} is an apocalyptic number.

12221000222200 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 12221000222200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18207328797000).

12221000222200 is an abundant number, since it is smaller than the sum of its proper divisors (24193657371800).

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

12221000222200 is a wasteful number, since it uses less digits than its factorization.

12221000222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122591 (or 1122575 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12221000222200 its reverse (222200012221), we get a palindrome (12443200234421).

The spelling of 12221000222200 in words is "twelve trillion, two hundred twenty-one billion, two hundred twenty-two thousand, two hundred".