33120321121 has 4 divisors (see below), whose sum is σ = 33120777492. Its totient is φ = 33119864752.

The previous prime is 33120321089. The next prime is 33120321127. The reversal of 33120321121 is 12112302133.

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 1573232896 + 31547088225 = 39664^2 + 177615^2 .

It is a cyclic number.

It is not a de Polignac number, because 33120321121 - 2⁵ = 33120321089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33120321127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92386 + ... + 273451.

It is an arithmetic number, because the mean of its divisors is an integer number (8280194373).

Almost surely, 2^33120321121 is an apocalyptic number.

It is an amenable number.

33120321121 is a deficient number, since it is larger than the sum of its proper divisors (456371).

33120321121 is an equidigital number, since it uses as much as digits as its factorization.

33120321121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456370.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 33120321121 its reverse (12112302133), we get a palindrome (45232623254).

The spelling of 33120321121 in words is "thirty-three billion, one hundred twenty million, three hundred twenty-one thousand, one hundred twenty-one".