33001121 has 4 divisors (see below), whose sum is σ = 33025200. Its totient is φ = 32977044.

The previous prime is 33001117. The next prime is 33001141. The reversal of 33001121 is 12110033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33001121 - 2² = 33001117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33001141) 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, 9851 + ... + 12768.

It is an arithmetic number, because the mean of its divisors is an integer number (8256300).

Almost surely, 2^33001121 is an apocalyptic number.

It is an amenable number.

33001121 is a deficient number, since it is larger than the sum of its proper divisors (24079).

33001121 is a wasteful number, since it uses less digits than its factorization.

33001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24078.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 33001121 is about 5744.6602162356. The cubic root of 33001121 is about 320.7570649241.

Adding to 33001121 its reverse (12110033), we get a palindrome (45111154).

The spelling of 33001121 in words is "thirty-three million, one thousand, one hundred twenty-one".