Adding to 12211021220200 its reverse (202212011221), we get a palindrome (12413233231421).
It is a happy number.
Almost surely, 212211021220200 is an apocalyptic number.
12211021220200 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 12211021220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15742733382720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12211021220200 is a wasteful number, since it uses less digits than its factorization.
12211021220200 is an odious number, because the sum of its binary digits is odd.
The spelling of 12211021220200 in words is "twelve trillion, two hundred eleven billion, twenty-one million, two hundred twenty thousand, two hundred".