33121804 has 6 divisors (see below), whose sum is σ = 57963164. Its totient is φ = 16560900.

The previous prime is 33121801. The next prime is 33121843. The reversal of 33121804 is 40812133.

It is not an unprimeable number, because it can be changed into a prime (33121801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140222 + ... + 4140229.

Almost surely, 2^33121804 is an apocalyptic number.

It is an amenable number.

33121804 is a deficient number, since it is larger than the sum of its proper divisors (24841360).

33121804 is a wasteful number, since it uses less digits than its factorization.

33121804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8280455 (or 8280453 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 33121804 is about 5755.1545591756. The cubic root of 33121804 is about 321.1475853342.

Adding to 33121804 its reverse (40812133), we get a palindrome (73933937).

The spelling of 33121804 in words is "thirty-three million, one hundred twenty-one thousand, eight hundred four".