33221133 has 12 divisors (see below), whose sum is σ = 52348608. Its totient is φ = 20133960.

The previous prime is 33221093. The next prime is 33221137. The reversal of 33221133 is 33112233.

It is not a de Polignac number, because 33221133 - 2¹⁷ = 33090061 is a prime.

It is a super-2 number, since 2×33221133² = 2207287355607378, which contains 22 as substring.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33221137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167685 + ... + 167882.

It is an arithmetic number, because the mean of its divisors is an integer number (4362384).

Almost surely, 2^33221133 is an apocalyptic number.

33221133 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

33221133 is a deficient number, since it is larger than the sum of its proper divisors (19127475).

33221133 is a wasteful number, since it uses less digits than its factorization.

33221133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335584 (or 335581 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 33221133 is about 5763.7776674678. Note that the first 3 decimals coincide. The cubic root of 33221133 is about 321.4682948578.

Adding to 33221133 its reverse (33112233), we get a palindrome (66333366).

Subtracting from 33221133 its reverse (33112233), we obtain a square (108900 = 330²).

The spelling of 33221133 in words is "thirty-three million, two hundred twenty-one thousand, one hundred thirty-three".