2211021100000 has 144 divisors (see below), whose sum is σ = 5453925145200. Its totient is φ = 882280960000.

The previous prime is 2211021099997. The next prime is 2211021100027. The reversal of 2211021100000 is 11201122.

It is a super-2 number, since 2×2211021100000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a self number, because there is not a number n which added to its sum of digits gives 2211021100000.

It is a congruent number.

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, 41873616 + ... + 41926384.

It is an arithmetic number, because the mean of its divisors is an integer number (37874480175).

Almost surely, 2^{2211021100000} is an apocalyptic number.

2211021100000 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 2211021100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2726962572600).

2211021100000 is an abundant number, since it is smaller than the sum of its proper divisors (3242904045200).

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

2211021100000 is an frugal number, since it uses more digits than its factorization.

2211021100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53223 (or 53195 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 2211021100000 its reverse (11201122), we get a palindrome (2211032301122).

The spelling of 2211021100000 in words is "two trillion, two hundred eleven billion, twenty-one million, one hundred thousand".