22033021 has 8 divisors (see below), whose sum is σ = 22492800. Its totient is φ = 21577920.

The previous prime is 22033013. The next prime is 22033043. The reversal of 22033021 is 12033022.

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 22033021 - 2³ = 22033013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22032992 and 22033010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22033051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9285 + ... + 11413.

It is an arithmetic number, because the mean of its divisors is an integer number (2811600).

Almost surely, 2^22033021 is an apocalyptic number.

It is an amenable number.

22033021 is a deficient number, since it is larger than the sum of its proper divisors (459779).

22033021 is a wasteful number, since it uses less digits than its factorization.

22033021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339.

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

The square root of 22033021 is about 4693.9344903822. The cubic root of 22033021 is about 280.3440541061.

Adding to 22033021 its reverse (12033022), we get a palindrome (34066043).

Subtracting from 22033021 its reverse (12033022), we obtain a palindrome (9999999).

The spelling of 22033021 in words is "twenty-two million, thirty-three thousand, twenty-one".