Adding to 20110000000 its reverse (1102), we get a palindrome (20110001102).
It is a tau number, because it is divible by the number of its divisors (128).
It is a congruent number.
Almost surely, 220110000000 is an apocalyptic number.
20110000000 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 20110000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25051693680).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20110000000 is an frugal number, since it uses more digits than its factorization.
20110000000 is an odious number, because the sum of its binary digits is odd.
The spelling of 20110000000 in words is "twenty billion, one hundred ten million", and thus it is an aban number.