20323343344221 has 24 divisors (see below), whose sum is σ = 29380848120000. Its totient is φ = 13537400737536.

The previous prime is 20323343344189. The next prime is 20323343344229. The reversal of 20323343344221 is 12244334332302.

20323343344221 is a `hidden beast` number, since 2 + 0 + 32 + 334 + 33 + 44 + 221 = 666.

It is not a de Polignac number, because 20323343344221 - 2⁵ = 20323343344189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323343344229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 399513430 + ... + 399564296.

It is an arithmetic number, because the mean of its divisors is an integer number (1224202005000).

Almost surely, 2^{20323343344221} is an apocalyptic number.

It is an amenable number.

20323343344221 is a deficient number, since it is larger than the sum of its proper divisors (9057504775779).

20323343344221 is a wasteful number, since it uses less digits than its factorization.

20323343344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87665 (or 87662 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 36.

Adding to 20323343344221 its reverse (12244334332302), we get a palindrome (32567677676523).

The spelling of 20323343344221 in words is "twenty trillion, three hundred twenty-three billion, three hundred forty-three million, three hundred forty-four thousand, two hundred twenty-one".