12213123320012 has 12 divisors (see below), whose sum is σ = 21373097662560. Its totient is φ = 6106523987856.

The previous prime is 12213123319981. The next prime is 12213123320077. The reversal of 12213123320012 is 21002332131221.

It is a self number, because there is not a number n which added to its sum of digits gives 12213123320012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8682212 + ... + 9990347.

It is an arithmetic number, because the mean of its divisors is an integer number (1781091471880).

Almost surely, 2^{12213123320012} is an apocalyptic number.

It is an amenable number.

12213123320012 is a deficient number, since it is larger than the sum of its proper divisors (9159974342548).

12213123320012 is a wasteful number, since it uses less digits than its factorization.

12213123320012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18836080 (or 18836078 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 12213123320012 its reverse (21002332131221), we get a palindrome (33215455451233).

The spelling of 12213123320012 in words is "twelve trillion, two hundred thirteen billion, one hundred twenty-three million, three hundred twenty thousand, twelve".