33133121 has 8 divisors (see below), whose sum is σ = 37959744. Its totient is φ = 28329840.

The previous prime is 33133063. The next prime is 33133181. The reversal of 33133121 is 12133133.

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

It is a de Polignac number, because none of the positive numbers 2^k-33133121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33133121.

It is not an unprimeable number, because it can be changed into a prime (33133181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2675 + ... + 8568.

It is an arithmetic number, because the mean of its divisors is an integer number (4744968).

Almost surely, 2^33133121 is an apocalyptic number.

It is an amenable number.

33133121 is a deficient number, since it is larger than the sum of its proper divisors (4826623).

33133121 is a wasteful number, since it uses less digits than its factorization.

33133121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11671.

The product of its digits is 162, while the sum is 17.

The square root of 33133121 is about 5756.1376807717. The cubic root of 33133121 is about 321.1841575508.

Adding to 33133121 its reverse (12133133), we get a palindrome (45266254).

The spelling of 33133121 in words is "thirty-three million, one hundred thirty-three thousand, one hundred twenty-one".