20231321123321 has 16 divisors (see below), whose sum is σ = 25314524764800. Its totient is φ = 15707753642880.

The previous prime is 20231321123297. The next prime is 20231321123359. The reversal of 20231321123321 is 12332112313202.

It is a cyclic number.

It is not a de Polignac number, because 20231321123321 - 2¹⁴ = 20231321106937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20231321123521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 474246596 + ... + 474289253.

It is an arithmetic number, because the mean of its divisors is an integer number (1582157797800).

Almost surely, 2^{20231321123321} is an apocalyptic number.

It is an amenable number.

20231321123321 is a deficient number, since it is larger than the sum of its proper divisors (5083203641479).

20231321123321 is a wasteful number, since it uses less digits than its factorization.

20231321123321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948536144.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20231321123321 its reverse (12332112313202), we get a palindrome (32563433436523).

The spelling of 20231321123321 in words is "twenty trillion, two hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, three hundred twenty-one".