Almost surely, 21111000100 is an apocalyptic number.
1111000100 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 1111000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406993280).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1111000100 is a wasteful number, since it uses less digits than its factorization.
1111000100 is an odious number, because the sum of its binary digits is odd.
The square root of 1111000100 is about 33331.6681250729. The cubic root of 1111000100 is about 1035.7096737692.
Adding to 1111000100 its reverse (10001111), we get a palindrome (1121001211).
The spelling of 1111000100 in words is "one billion, one hundred eleven million, one hundred", and thus it is an aban number.