20223102321 has 24 divisors (see below), whose sum is σ = 30009154344. Its totient is φ = 13113964800.

The previous prime is 20223102293. The next prime is 20223102377. The reversal of 20223102321 is 12320132202.

20223102321 is a `hidden beast` number, since 20 + 223 + 102 + 321 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4862970225 + 15360132096 = 69735^2 + 123936^2 .

It is not a de Polignac number, because 20223102321 - 2²⁶ = 20155993457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20223102294 and 20223102303.

It is not an unprimeable number, because it can be changed into a prime (20223102391) 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, 1637871 + ... + 1650171.

It is an arithmetic number, because the mean of its divisors is an integer number (1250381431).

Almost surely, 2^20223102321 is an apocalyptic number.

It is an amenable number.

20223102321 is a deficient number, since it is larger than the sum of its proper divisors (9786052023).

20223102321 is a wasteful number, since it uses less digits than its factorization.

20223102321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17281 (or 17278 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20223102321 its reverse (12320132202), we get a palindrome (32543234523).

The spelling of 20223102321 in words is "twenty billion, two hundred twenty-three million, one hundred two thousand, three hundred twenty-one".