It is a happy number.
311220121022113 is nontrivially palindromic in base 10.
It is a weak prime.
It is a palprime.
It is a cyclic number.
Almost surely, 2311220121022113 is an apocalyptic number.
It is an amenable number.
311220121022113 is an equidigital number, since it uses as much as digits as its factorization.
311220121022113 is an evil number, because the sum of its binary digits is even.
The spelling of 311220121022113 in words is "three hundred eleven trillion, two hundred twenty billion, one hundred twenty-one million, twenty-two thousand, one hundred thirteen".