33120912133 has 4 divisors (see below), whose sum is σ = 35069201100. Its totient is φ = 31172623168.

The previous prime is 33120912073. The next prime is 33120912169. The reversal of 33120912133 is 33121902133.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28769926689 + 4350985444 = 169617^2 + 65962^2 .

It is a cyclic number.

It is not a de Polignac number, because 33120912133 - 2¹³ = 33120903941 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 (33120912733) 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, 974144458 + ... + 974144491.

It is an arithmetic number, because the mean of its divisors is an integer number (8767300275).

Almost surely, 2^33120912133 is an apocalyptic number.

It is an amenable number.

33120912133 is a deficient number, since it is larger than the sum of its proper divisors (1948288967).

33120912133 is a wasteful number, since it uses less digits than its factorization.

33120912133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1948288966.

The product of its (nonzero) digits is 2916, while the sum is 28.

The spelling of 33120912133 in words is "thirty-three billion, one hundred twenty million, nine hundred twelve thousand, one hundred thirty-three".