33134221 has 4 divisors (see below), whose sum is σ = 33146172. Its totient is φ = 33122272.

The previous prime is 33134219. The next prime is 33134249. The reversal of 33134221 is 12243133.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6817321 + 26316900 = 2611^2 + 5130^2 .

It is a cyclic number.

It is not a de Polignac number, because 33134221 - 2¹ = 33134219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33134291) 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, 585 + ... + 8161.

It is an arithmetic number, because the mean of its divisors is an integer number (8286543).

Almost surely, 2^33134221 is an apocalyptic number.

It is an amenable number.

33134221 is a deficient number, since it is larger than the sum of its proper divisors (11951).

33134221 is an equidigital number, since it uses as much as digits as its factorization.

33134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11950.

The product of its digits is 432, while the sum is 19.

The square root of 33134221 is about 5756.2332301602. The cubic root of 33134221 is about 321.1877118861.

Adding to 33134221 its reverse (12243133), we get a palindrome (45377354).

The spelling of 33134221 in words is "thirty-three million, one hundred thirty-four thousand, two hundred twenty-one".