It is an unprimeable number.
Almost surely, 220120201100 is an apocalyptic number.
20120201100 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 pseudoperfect number, because it is the sum of a subset of its proper divisors.
20120201100 is a wasteful number, since it uses less digits than its factorization.
20120201100 is an evil number, because the sum of its binary digits is even.
Adding to 20120201100 its reverse (110202102), we get a palindrome (20230403202).
The spelling of 20120201100 in words is "twenty billion, one hundred twenty million, two hundred one thousand, one hundred".