It is a congruent number.
It is an unprimeable number.
Almost surely, 213122413515255 is an apocalyptic number.
13122413515255 is a wasteful number, since it uses less digits than its factorization.
13122413515255 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 14663847.
Adding to 13122413515255 its reverse (55251531422131), we get a palindrome (68373944937386).
The spelling of 13122413515255 in words is "thirteen trillion, one hundred twenty-two billion, four hundred thirteen million, five hundred fifteen thousand, two hundred fifty-five".