13323030020021 has 4 divisors (see below), whose sum is σ = 13683111912492. Its totient is φ = 12962948127552.

The previous prime is 13323030019969. The next prime is 13323030020051. The reversal of 13323030020021 is 12002003032331.

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 12361630159921 + 961399860100 = 3515911^2 + 980510^2 .

It is a cyclic number.

It is not a de Polignac number, because 13323030020021 - 2³⁴ = 13305850150837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13323030019975 and 13323030020002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13323030020051) 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 3 ways as a sum of consecutive naturals, for example, 180040946180 + ... + 180040946253.

It is an arithmetic number, because the mean of its divisors is an integer number (3420777978123).

Almost surely, 2^{13323030020021} is an apocalyptic number.

It is an amenable number.

13323030020021 is a deficient number, since it is larger than the sum of its proper divisors (360081892471).

13323030020021 is an equidigital number, since it uses as much as digits as its factorization.

13323030020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360081892470.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13323030020021 its reverse (12002003032331), we get a palindrome (25325033052352).

The spelling of 13323030020021 in words is "thirteen trillion, three hundred twenty-three billion, thirty million, twenty thousand, twenty-one".