1213304912012 has 24 divisors (see below), whose sum is σ = 2178014480880. Its totient is φ = 591055107840.

The previous prime is 1213304912011. The next prime is 1213304912041. The reversal of 1213304912012 is 2102194033121.

It is not an unprimeable number, because it can be changed into a prime (1213304912011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4884353 + ... + 5126744.

It is an arithmetic number, because the mean of its divisors is an integer number (90750603370).

Almost surely, 2^{1213304912012} is an apocalyptic number.

It is an amenable number.

1213304912012 is a deficient number, since it is larger than the sum of its proper divisors (964709568868).

1213304912012 is a wasteful number, since it uses less digits than its factorization.

1213304912012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011881 (or 10011879 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 1213304912012 its reverse (2102194033121), we get a palindrome (3315498945133).

The spelling of 1213304912012 in words is "one trillion, two hundred thirteen billion, three hundred four million, nine hundred twelve thousand, twelve".