Adding to 11111010100 its reverse (101011111), we get a palindrome (11212021211).
It is a happy number.
It is a congruent number.
Almost surely, 211111010100 is an apocalyptic number.
11111010100 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 11111010100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12456327744).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11111010100 is a wasteful number, since it uses less digits than its factorization.
11111010100 is an odious number, because the sum of its binary digits is odd.
The spelling of 11111010100 in words is "eleven billion, one hundred eleven million, ten thousand, one hundred".