12012320033 has 4 divisors (see below), whose sum is σ = 13728365760. Its totient is φ = 10296274308.

The previous prime is 12012319987. The next prime is 12012320077. The reversal of 12012320033 is 33002321021.

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 12012320033 - 2⁸ = 12012319777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12012319993 and 12012320020.

It is not an unprimeable number, because it can be changed into a prime (12012320093) 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, 858022853 + ... + 858022866.

It is an arithmetic number, because the mean of its divisors is an integer number (3432091440).

Almost surely, 2^12012320033 is an apocalyptic number.

It is an amenable number.

12012320033 is a deficient number, since it is larger than the sum of its proper divisors (1716045727).

12012320033 is an equidigital number, since it uses as much as digits as its factorization.

12012320033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716045726.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 12012320033 its reverse (33002321021), we get a palindrome (45014641054).

The spelling of 12012320033 in words is "twelve billion, twelve million, three hundred twenty thousand, thirty-three".