Adding to 22111000111200 its reverse (211100011122), we get a palindrome (22322100122322).
It is a congruent number.
It is an unprimeable number.
Almost surely, 222111000111200 is an apocalyptic number.
22111000111200 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 22111000111200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49622448960000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
22111000111200 is a wasteful number, since it uses less digits than its factorization.
22111000111200 is an evil number, because the sum of its binary digits is even.
The spelling of 22111000111200 in words is "twenty-two trillion, one hundred eleven billion, one hundred eleven thousand, two hundred".