22330021 has 8 divisors (see below), whose sum is σ = 25631424. Its totient is φ = 19056480.

The previous prime is 22330003. The next prime is 22330037. The reversal of 22330021 is 12003322.

It is a happy number.

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 22330021 - 2⁷ = 22329893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22329983 and 22330010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22330081) 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 in 7 ways as a sum of consecutive naturals, for example, 5215 + ... + 8476.

It is an arithmetic number, because the mean of its divisors is an integer number (3203928).

Almost surely, 2^22330021 is an apocalyptic number.

It is an amenable number.

22330021 is a deficient number, since it is larger than the sum of its proper divisors (3301403).

22330021 is a wasteful number, since it uses less digits than its factorization.

22330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13931.

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

The square root of 22330021 is about 4725.4651622883. The cubic root of 22330021 is about 281.5980937062.

Adding to 22330021 its reverse (12003322), we get a palindrome (34333343).

The spelling of 22330021 in words is "twenty-two million, three hundred thirty thousand, twenty-one".