33441221 has 4 divisors (see below), whose sum is σ = 36481344. Its totient is φ = 30401100.

The previous prime is 33441217. The next prime is 33441223. The reversal of 33441221 is 12214433.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33441221 - 2² = 33441217 is a prime.

It is a super-2 number, since 2×33441221² = 2236630523941682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33441193 and 33441202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33441223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1520045 + ... + 1520066.

It is an arithmetic number, because the mean of its divisors is an integer number (9120336).

Almost surely, 2^33441221 is an apocalyptic number.

It is an amenable number.

33441221 is a deficient number, since it is larger than the sum of its proper divisors (3040123).

33441221 is a wasteful number, since it uses less digits than its factorization.

33441221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040122.

The product of its digits is 576, while the sum is 20.

The square root of 33441221 is about 5782.8384898767. The cubic root of 33441221 is about 322.1766355952.

Adding to 33441221 its reverse (12214433), we get a palindrome (45655654).

It can be divided in two parts, 334412 and 21, that added together give a palindrome (334433).

The spelling of 33441221 in words is "thirty-three million, four hundred forty-one thousand, two hundred twenty-one".