Adding to 22101112 its reverse (21110122), we get a palindrome (43211234).
It is a congruent number.
Almost surely, 222101112 is an apocalyptic number.
22101112 is a gapful number since it is divisible by the number (22) 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.
22101112 is a wasteful number, since it uses less digits than its factorization.
22101112 is an evil number, because the sum of its binary digits is even.
The square root of 22101112 is about 4701.1819790346. The cubic root of 22101112 is about 280.6325495197.
The spelling of 22101112 in words is "twenty-two million, one hundred one thousand, one hundred twelve".