20222321 has 8 divisors (see below), whose sum is σ = 23340864. Its totient is φ = 17161200.

The previous prime is 20222297. The next prime is 20222329. The reversal of 20222321 is 12322202.

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

It is not a de Polignac number, because 20222321 - 2¹⁸ = 19960177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20222296 and 20222305.

It is not an unprimeable number, because it can be changed into a prime (20222329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13595 + ... + 15008.

It is an arithmetic number, because the mean of its divisors is an integer number (2917608).

Almost surely, 2^20222321 is an apocalyptic number.

It is an amenable number.

20222321 is a deficient number, since it is larger than the sum of its proper divisors (3118543).

20222321 is a wasteful number, since it uses less digits than its factorization.

20222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28711.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20222321 is about 4496.9235039080. The cubic root of 20222321 is about 272.4438444451.

Adding to 20222321 its reverse (12322202), we get a palindrome (32544523).

The spelling of 20222321 in words is "twenty million, two hundred twenty-two thousand, three hundred twenty-one".