It is an unprimeable number.
Almost surely, 2101211101112100 is an apocalyptic number.
101211101112100 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 pseudoperfect number, because it is the sum of a subset of its proper divisors.
101211101112100 is a wasteful number, since it uses less digits than its factorization.
101211101112100 is an evil number, because the sum of its binary digits is even.
Adding to 101211101112100 its reverse (1211101112101), we get a palindrome (102422202224201).
Subtracting from 101211101112100 its reverse (1211101112101), we obtain a palindrome (99999999999999).
The spelling of 101211101112100 in words is "one hundred one trillion, two hundred eleven billion, one hundred one million, one hundred twelve thousand, one hundred".