12012320133 has 18 divisors (see below), whose sum is σ = 19071903942. Its totient is φ = 7280193360.

The previous prime is 12012320093. The next prime is 12012320161. The reversal of 12012320133 is 33102321021.

It can be written as a sum of positive squares in only one way, i.e., 10936348929 + 1075971204 = 104577^2 + 32802^2 .

It is not a de Polignac number, because 12012320133 - 2⁹ = 12012319621 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012320183) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5514210 + ... + 5516387.

It is an arithmetic number, because the mean of its divisors is an integer number (1059550219).

Almost surely, 2^12012320133 is an apocalyptic number.

It is an amenable number.

12012320133 is a deficient number, since it is larger than the sum of its proper divisors (7059583809).

12012320133 is a wasteful number, since it uses less digits than its factorization.

12012320133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11030625 (or 11030611 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12012320133 its reverse (33102321021), we get a palindrome (45114641154).

The spelling of 12012320133 in words is "twelve billion, twelve million, three hundred twenty thousand, one hundred thirty-three".