20233321 has 2 divisors, whose sum is σ = 20233322. Its totient is φ = 20233320.

The previous prime is 20233319. The next prime is 20233363. The reversal of 20233321 is 12333202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18705625 + 1527696 = 4325^2 + 1236^2 .

It is a cyclic number.

It is not a de Polignac number, because 20233321 - 2¹ = 20233319 is a prime.

Together with 20233319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 20233295 and 20233304.

It is not a weakly prime, because it can be changed into another prime (20239321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10116660 + 10116661.

It is an arithmetic number, because the mean of its divisors is an integer number (10116661).

Almost surely, 2^20233321 is an apocalyptic number.

It is an amenable number.

20233321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20233321 is an equidigital number, since it uses as much as digits as its factorization.

20233321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 20233321 is about 4498.1463960169. The cubic root of 20233321 is about 272.4932344082.

Adding to 20233321 its reverse (12333202), we get a palindrome (32566523).

The spelling of 20233321 in words is "twenty million, two hundred thirty-three thousand, three hundred twenty-one".