22032221 has 8 divisors (see below), whose sum is σ = 23474304. Its totient is φ = 20606400.

The previous prime is 22032169. The next prime is 22032233. The reversal of 22032221 is 12223022.

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 22032221 - 2¹⁰ = 22031197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22032196 and 22032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22032271) 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, 1205 + ... + 6746.

It is an arithmetic number, because the mean of its divisors is an integer number (2934288).

Almost surely, 2^22032221 is an apocalyptic number.

It is an amenable number.

22032221 is a deficient number, since it is larger than the sum of its proper divisors (1442083).

22032221 is a wasteful number, since it uses less digits than its factorization.

22032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8131.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 22032221 is about 4693.8492732511. The cubic root of 22032221 is about 280.3406610481.

Adding to 22032221 its reverse (12223022), we get a palindrome (34255243).

The spelling of 22032221 in words is "twenty-two million, thirty-two thousand, two hundred twenty-one".