2211221102200 has 192 divisors, whose sum is σ = 5655631766400. Its totient is φ = 797344934400.

The previous prime is 2211221102191. The next prime is 2211221102213. The reversal of 2211221102200 is 22011221122.

It is a happy number.

It is a congruent 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 47 ways as a sum of consecutive naturals, for example, 133045491 + ... + 133062109.

It is an arithmetic number, because the mean of its divisors is an integer number (29456415450).

Almost surely, 2^{2211221102200} is an apocalyptic number.

2211221102200 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 2211221102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2827815883200).

2211221102200 is an abundant number, since it is smaller than the sum of its proper divisors (3444410664200).

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

2211221102200 is a wasteful number, since it uses less digits than its factorization.

2211221102200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17150 (or 17141 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2211221102200 its reverse (22011221122), we get a palindrome (2233232323322).

The spelling of 2211221102200 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, one hundred two thousand, two hundred".