13021220200323 has 32 divisors (see below), whose sum is σ = 17997302664000. Its totient is φ = 8367427547136.

The previous prime is 13021220200267. The next prime is 13021220200333. The reversal of 13021220200323 is 32300202212031.

It is a happy number.

It is not a de Polignac number, because 13021220200323 - 2⁹ = 13021220199811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13021220200323.

It is not an unprimeable number, because it can be changed into a prime (13021220200333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25953853 + ... + 26450801.

It is an arithmetic number, because the mean of its divisors is an integer number (562415708250).

Almost surely, 2^{13021220200323} is an apocalyptic number.

13021220200323 is a deficient number, since it is larger than the sum of its proper divisors (4976082463677).

13021220200323 is a wasteful number, since it uses less digits than its factorization.

13021220200323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499191.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13021220200323 its reverse (32300202212031), we get a palindrome (45321422412354).

The spelling of 13021220200323 in words is "thirteen trillion, twenty-one billion, two hundred twenty million, two hundred thousand, three hundred twenty-three".