Adding to 1312100220120 its reverse (210220012131), we get a palindrome (1522320232251).
It is a self number, because there is not a number n which added to its sum of digits gives 1312100220120.
It is a congruent number.
Almost surely, 21312100220120 is an apocalyptic number.
1312100220120 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 1312100220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2018438092800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1312100220120 is a wasteful number, since it uses less digits than its factorization.
1312100220120 is an evil number, because the sum of its binary digits is even.
The spelling of 1312100220120 in words is "one trillion, three hundred twelve billion, one hundred million, two hundred twenty thousand, one hundred twenty".