33121233 has 24 divisors (see below), whose sum is σ = 49008960. Its totient is φ = 21549600.

The previous prime is 33121213. The next prime is 33121247. The reversal of 33121233 is 33212133.

It is not a de Polignac number, because 33121233 - 2⁶ = 33121169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33121213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75228 + ... + 75666.

It is an arithmetic number, because the mean of its divisors is an integer number (2042040).

Almost surely, 2^33121233 is an apocalyptic number.

It is an amenable number.

33121233 is a deficient number, since it is larger than the sum of its proper divisors (15887727).

33121233 is a wasteful number, since it uses less digits than its factorization.

33121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 626 counting only the distinct ones).

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

The square root of 33121233 is about 5755.1049512585. The cubic root of 33121233 is about 321.1457398598.

Adding to 33121233 its reverse (33212133), we get a palindrome (66333366).

The spelling of 33121233 in words is "thirty-three million, one hundred twenty-one thousand, two hundred thirty-three".