22033321 has 2 divisors, whose sum is σ = 22033322. Its totient is φ = 22033320.

The previous prime is 22033313. The next prime is 22033327. The reversal of 22033321 is 12333022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13395600 + 8637721 = 3660^2 + 2939^2 .

It is a cyclic number.

It is not a de Polignac number, because 22033321 - 2³ = 22033313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22033295 and 22033304.

It is not a weakly prime, because it can be changed into another prime (22033327) 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 as a sum of consecutive naturals, namely, 11016660 + 11016661.

It is an arithmetic number, because the mean of its divisors is an integer number (11016661).

Almost surely, 2^22033321 is an apocalyptic number.

It is an amenable number.

22033321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22033321 is an equidigital number, since it uses as much as digits as its factorization.

22033321 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 22033321 is about 4693.9664464076. The cubic root of 22033321 is about 280.3453264817.

Adding to 22033321 its reverse (12333022), we get a palindrome (34366343).

The spelling of 22033321 in words is "twenty-two million, thirty-three thousand, three hundred twenty-one".