20210023321 has 8 divisors (see below), whose sum is σ = 20301778440. Its totient is φ = 20118403968.

The previous prime is 20210023319. The next prime is 20210023343. The reversal of 20210023321 is 12332001202.

It can be written as a sum of positive squares in 4 ways, for example, as 1767025296 + 18442998025 = 42036^2 + 135805^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20210023321 - 2¹ = 20210023319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20210023295 and 20210023304.

It is not an unprimeable number, because it can be changed into a prime (20210023381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270615 + ... + 337123.

It is an arithmetic number, because the mean of its divisors is an integer number (2537722305).

Almost surely, 2^20210023321 is an apocalyptic number.

It is an amenable number.

20210023321 is a deficient number, since it is larger than the sum of its proper divisors (91755119).

20210023321 is a wasteful number, since it uses less digits than its factorization.

20210023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67883.

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

Adding to 20210023321 its reverse (12332001202), we get a palindrome (32542024523).

The spelling of 20210023321 in words is "twenty billion, two hundred ten million, twenty-three thousand, three hundred twenty-one".