33130123321 has 4 divisors (see below), whose sum is σ = 33131905012. Its totient is φ = 33128341632.

The previous prime is 33130123309. The next prime is 33130123339. The reversal of 33130123321 is 12332103133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12332103133 = 7 ⋅1761729019.

It can be written as a sum of positive squares in 2 ways, for example, as 23581902096 + 9548221225 = 153564^2 + 97715^2 .

It is a cyclic number.

It is not a de Polignac number, because 33130123321 - 2⁷ = 33130123193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 33130123292 and 33130123301.

It is not an unprimeable number, because it can be changed into a prime (33130123921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 862656 + ... + 900241.

It is an arithmetic number, because the mean of its divisors is an integer number (8282976253).

Almost surely, 2^33130123321 is an apocalyptic number.

It is an amenable number.

33130123321 is a deficient number, since it is larger than the sum of its proper divisors (1781691).

33130123321 is a wasteful number, since it uses less digits than its factorization.

33130123321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1781690.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 33130123321 its reverse (12332103133), we get a palindrome (45462226454).

The spelling of 33130123321 in words is "thirty-three billion, one hundred thirty million, one hundred twenty-three thousand, three hundred twenty-one".