13102203020321 has 4 divisors (see below), whose sum is σ = 13554003124500. Its totient is φ = 12650402916144.

The previous prime is 13102203020317. The next prime is 13102203020353. The reversal of 13102203020321 is 12302030220131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2122953905296 + 10979249115025 = 1457036^2 + 3313495^2 .

It is a cyclic number.

It is not a de Polignac number, because 13102203020321 - 2² = 13102203020317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13102203020293 and 13102203020302.

It is not an unprimeable number, because it can be changed into a prime (13102203040321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225900052046 + ... + 225900052103.

It is an arithmetic number, because the mean of its divisors is an integer number (3388500781125).

Almost surely, 2^{13102203020321} is an apocalyptic number.

It is an amenable number.

13102203020321 is a deficient number, since it is larger than the sum of its proper divisors (451800104179).

13102203020321 is an equidigital number, since it uses as much as digits as its factorization.

13102203020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451800104178.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13102203020321 its reverse (12302030220131), we get a palindrome (25404233240452).

The spelling of 13102203020321 in words is "thirteen trillion, one hundred two billion, two hundred three million, twenty thousand, three hundred twenty-one".