33224421 has 8 divisors (see below), whose sum is σ = 44328544. Its totient is φ = 22134960.

The previous prime is 33224413. The next prime is 33224431. The reversal of 33224421 is 12442233.

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

It is not a de Polignac number, because 33224421 - 2³ = 33224413 is a prime.

It is a super-2 number, since 2×33224421² = 2207724301570482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33224431) 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, 3795 + ... + 8991.

It is an arithmetic number, because the mean of its divisors is an integer number (5541068).

Almost surely, 2^33224421 is an apocalyptic number.

It is an amenable number.

33224421 is a deficient number, since it is larger than the sum of its proper divisors (11104123).

33224421 is a wasteful number, since it uses less digits than its factorization.

33224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7331.

The product of its digits is 1152, while the sum is 21.

The square root of 33224421 is about 5764.0628900108. The cubic root of 33224421 is about 321.4789000840.

Adding to 33224421 its reverse (12442233), we get a palindrome (45666654).

It can be divided in two parts, 332 and 24421, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 33224421 in words is "thirty-three million, two hundred twenty-four thousand, four hundred twenty-one".