33343221 has 8 divisors (see below), whose sum is σ = 44494144. Its totient is φ = 22210560.

The previous prime is 33343213. The next prime is 33343241. The reversal of 33343221 is 12234333.

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

It is not a de Polignac number, because 33343221 - 2³ = 33343213 is a prime.

It is a super-2 number, since 2×33343221² = 2223540773309682, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33343241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501 + ... + 8181.

It is an arithmetic number, because the mean of its divisors is an integer number (5561768).

Almost surely, 2^33343221 is an apocalyptic number.

It is an amenable number.

33343221 is a deficient number, since it is larger than the sum of its proper divisors (11150923).

33343221 is a wasteful number, since it uses less digits than its factorization.

33343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9131.

The product of its digits is 1296, while the sum is 21.

The square root of 33343221 is about 5774.3589254566. The cubic root of 33343221 is about 321.8616131800.

Adding to 33343221 its reverse (12234333), we get a palindrome (45577554).

It can be divided in two parts, 3334 and 3221, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 33343221 in words is "thirty-three million, three hundred forty-three thousand, two hundred twenty-one".