22333321 has 2 divisors, whose sum is σ = 22333322. Its totient is φ = 22333320.

The previous prime is 22333313. The next prime is 22333343. The reversal of 22333321 is 12333322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21724921 + 608400 = 4661^2 + 780^2 .

It is a cyclic number.

It is not a de Polignac number, because 22333321 - 2³ = 22333313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22333301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11166660 + 11166661.

It is an arithmetic number, because the mean of its divisors is an integer number (11166661).

Almost surely, 2^22333321 is an apocalyptic number.

It is an amenable number.

22333321 is a deficient number, since it is larger than the sum of its proper divisors (1).

22333321 is an equidigital number, since it uses as much as digits as its factorization.

22333321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 19.

The square root of 22333321 is about 4725.8143213630. The cubic root of 22333321 is about 281.6119648371.

Adding to 22333321 its reverse (12333322), we get a palindrome (34666643).

Subtracting from 22333321 its reverse (12333322), we obtain a palindrome (9999999).

The spelling of 22333321 in words is "twenty-two million, three hundred thirty-three thousand, three hundred twenty-one".