22324321 has 4 divisors (see below), whose sum is σ = 22382100. Its totient is φ = 22266544.

The previous prime is 22324279. The next prime is 22324327. The reversal of 22324321 is 12342322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10497600 + 11826721 = 3240^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 22324321 - 2⁷ = 22324193 is a prime.

It is a super-3 number, since 3×22324321³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22324327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28306 + ... + 29083.

It is an arithmetic number, because the mean of its divisors is an integer number (5595525).

Almost surely, 2^22324321 is an apocalyptic number.

It is an amenable number.

22324321 is a deficient number, since it is larger than the sum of its proper divisors (57779).

22324321 is an equidigital number, since it uses as much as digits as its factorization.

22324321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57778.

The product of its digits is 576, while the sum is 19.

The square root of 22324321 is about 4724.8620085670. The cubic root of 22324321 is about 281.5741312607.

Adding to 22324321 its reverse (12342322), we get a palindrome (34666643).

The spelling of 22324321 in words is "twenty-two million, three hundred twenty-four thousand, three hundred twenty-one".