It is a nude number because it is divisible by every one of its digits.
Almost surely, 213122312 is an apocalyptic number.
13122312 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 13122312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19737600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
13122312 is a wasteful number, since it uses less digits than its factorization.
13122312 is an odious number, because the sum of its binary digits is odd.
The square root of 13122312 is about 3622.4731883066. The cubic root of 13122312 is about 235.8685948543.
Adding to 13122312 its reverse (21322131), we get a palindrome (34444443).
The spelling of 13122312 in words is "thirteen million, one hundred twenty-two thousand, three hundred twelve".