1321102013012 has 24 divisors (see below), whose sum is σ = 2392573800960. Its totient is φ = 637527091040.

The previous prime is 1321102013003. The next prime is 1321102013069. The reversal of 1321102013012 is 2103102011231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1897208 + ... + 2498319.

It is an arithmetic number, because the mean of its divisors is an integer number (99690575040).

Almost surely, 2^{1321102013012} is an apocalyptic number.

It is an amenable number.

1321102013012 is a deficient number, since it is larger than the sum of its proper divisors (1071471787948).

1321102013012 is a wasteful number, since it uses less digits than its factorization.

1321102013012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4398151 (or 4398149 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1321102013012 its reverse (2103102011231), we get a palindrome (3424204024243).

The spelling of 1321102013012 in words is "one trillion, three hundred twenty-one billion, one hundred two million, thirteen thousand, twelve".