33130120321 has 4 divisors (see below), whose sum is σ = 33136485700. Its totient is φ = 33123754944.

The previous prime is 33130120301. The next prime is 33130120343. The reversal of 33130120321 is 12302103133.

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 17738244225 + 15391876096 = 133185^2 + 124064^2 .

It is a cyclic number.

It is not a de Polignac number, because 33130120321 - 2¹⁵ = 33130087553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33130120301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3174876 + ... + 3185293.

It is an arithmetic number, because the mean of its divisors is an integer number (8284121425).

Almost surely, 2^33130120321 is an apocalyptic number.

It is an amenable number.

33130120321 is a deficient number, since it is larger than the sum of its proper divisors (6365379).

33130120321 is an equidigital number, since it uses as much as digits as its factorization.

33130120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6365378.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 33130120321 its reverse (12302103133), we get a palindrome (45432223454).

The spelling of 33130120321 in words is "thirty-three billion, one hundred thirty million, one hundred twenty thousand, three hundred twenty-one".