20323032220221 has 4 divisors (see below), whose sum is σ = 27097376293632. Its totient is φ = 13548688146812.

The previous prime is 20323032220189. The next prime is 20323032220223. The reversal of 20323032220221 is 12202223032302.

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 20323032220221 - 2⁵ = 20323032220189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20323032220191 and 20323032220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323032220223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3387172036701 + ... + 3387172036706.

It is an arithmetic number, because the mean of its divisors is an integer number (6774344073408).

Almost surely, 2^{20323032220221} is an apocalyptic number.

It is an amenable number.

20323032220221 is a deficient number, since it is larger than the sum of its proper divisors (6774344073411).

20323032220221 is an equidigital number, since it uses as much as digits as its factorization.

20323032220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6774344073410.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20323032220221 its reverse (12202223032302), we get a palindrome (32525255252523).

It can be divided in two parts, 2032303 and 2220221, that added together give a palindrome (4252524).

The spelling of 20323032220221 in words is "twenty trillion, three hundred twenty-three billion, thirty-two million, two hundred twenty thousand, two hundred twenty-one".