11212020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is a congruent number.
It is an unprimeable number.
Almost surely, 211212020 is an apocalyptic number.
11212020 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 11212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17673810).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
11212020 is an equidigital number, since it uses as much as digits as its factorization.
11212020 is an evil number, because the sum of its binary digits is even.
The square root of 11212020 is about 3348.4354555523. The cubic root of 11212020 is about 223.8177993304.
Adding to 11212020 its reverse (2021211), we get a palindrome (13233231).
The spelling of 11212020 in words is "eleven million, two hundred twelve thousand, twenty".