22003321 has 8 divisors (see below), whose sum is σ = 23738184. Its totient is φ = 20317440.

The previous prime is 22003313. The next prime is 22003327. The reversal of 22003321 is 12330022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1527696 + 20475625 = 1236^2 + 4525^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22003321 - 2³ = 22003313 is a prime.

It is a super-2 number, since 2×22003321² = 968292270058082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22003327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11310 + ... + 13111.

It is an arithmetic number, because the mean of its divisors is an integer number (2967273).

Almost surely, 2^22003321 is an apocalyptic number.

It is an amenable number.

22003321 is a deficient number, since it is larger than the sum of its proper divisors (1734863).

22003321 is a wasteful number, since it uses less digits than its factorization.

22003321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24491.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 22003321 is about 4690.7697662537. The cubic root of 22003321 is about 280.2180317086.

Adding to 22003321 its reverse (12330022), we get a palindrome (34333343).

The spelling of 22003321 in words is "twenty-two million, three thousand, three hundred twenty-one".