2221000012200 has 96 divisors (see below), whose sum is σ = 6888964881600. Its totient is φ = 591934210560.

The previous prime is 2221000012141. The next prime is 2221000012211. The reversal of 2221000012200 is 22100001222.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 31756 + ... + 2107844.

It is an arithmetic number, because the mean of its divisors is an integer number (71760050850).

Almost surely, 2^{2221000012200} is an apocalyptic number.

2221000012200 is a gapful number since it is divisible by the number (20) 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 2221000012200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3444482440800).

2221000012200 is an abundant number, since it is smaller than the sum of its proper divisors (4667964869400).

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

2221000012200 is a wasteful number, since it uses less digits than its factorization.

2221000012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077891 (or 2077882 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2221000012200 its reverse (22100001222), we get a palindrome (2243100013422).

The spelling of 2221000012200 in words is "two trillion, two hundred twenty-one billion, twelve thousand, two hundred".