20132020321 has 4 divisors (see below), whose sum is σ = 23008023232. Its totient is φ = 17256017412.

The previous prime is 20132020289. The next prime is 20132020339. The reversal of 20132020321 is 12302023102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20132020321 - 2⁵ = 20132020289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20132020295 and 20132020304.

It is not an unprimeable number, because it can be changed into a prime (20132020621) 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, 1438001445 + ... + 1438001458.

It is an arithmetic number, because the mean of its divisors is an integer number (5752005808).

Almost surely, 2^20132020321 is an apocalyptic number.

It is an amenable number.

20132020321 is a deficient number, since it is larger than the sum of its proper divisors (2876002911).

20132020321 is an equidigital number, since it uses as much as digits as its factorization.

20132020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876002910.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20132020321 its reverse (12302023102), we get a palindrome (32434043423).

The spelling of 20132020321 in words is "twenty billion, one hundred thirty-two million, twenty thousand, three hundred twenty-one".