It is a sphenic number, since it is the product of 3 distinct primes.
It is a self number, because there is not a number n which added to its sum of digits gives 21213543315002.
It is an unprimeable number.
Almost surely, 221213543315002 is an apocalyptic number.
21213543315002 is a wasteful number, since it uses less digits than its factorization.
21213543315002 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7401796032.
Adding to 21213543315002 its reverse (20051334531212), we get a palindrome (41264877846214).
The spelling of 21213543315002 in words is "twenty-one trillion, two hundred thirteen billion, five hundred forty-three million, three hundred fifteen thousand, two".