Adding to 1011112212 its reverse (2122111101), we get a palindrome (3133223313).
It is a congruent number.
It is an unprimeable number.
Almost surely, 21011112212 is an apocalyptic number.
1011112212 is a gapful number since it is divisible by the number (12) 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 1011112212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310904000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1011112212 is a wasteful number, since it uses less digits than its factorization.
1011112212 is an evil number, because the sum of its binary digits is even.
The square root of 1011112212 is about 31797.9906912371. The cubic root of 1011112212 is about 1003.6904346054.
The spelling of 1011112212 in words is "one billion, eleven million, one hundred twelve thousand, two hundred twelve".