1320210321213 has 16 divisors (see below), whose sum is σ = 2012279566976. Its totient is φ = 754206958080.

The previous prime is 1320210321197. The next prime is 1320210321223. The reversal of 1320210321213 is 3121230120231.

It is not a de Polignac number, because 1320210321213 - 2⁴ = 1320210321197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1320210321213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320210321223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8207608 + ... + 8366913.

It is an arithmetic number, because the mean of its divisors is an integer number (125767472936).

Almost surely, 2^{1320210321213} is an apocalyptic number.

It is an amenable number.

1320210321213 is a deficient number, since it is larger than the sum of its proper divisors (692069245763).

1320210321213 is a wasteful number, since it uses less digits than its factorization.

1320210321213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16578324.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1320210321213 its reverse (3121230120231), we get a palindrome (4441440441444).

The spelling of 1320210321213 in words is "one trillion, three hundred twenty billion, two hundred ten million, three hundred twenty-one thousand, two hundred thirteen".