It is an unprimeable number.
Almost surely, 2199801205520 is an apocalyptic number.
199801205520 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 199801205520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360846904320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
199801205520 is a wasteful number, since it uses less digits than its factorization.
199801205520 is an odious number, because the sum of its binary digits is odd.
The spelling of 199801205520 in words is "one hundred ninety-nine billion, eight hundred one million, two hundred five thousand, five hundred twenty".