12133203021 has 12 divisors (see below), whose sum is σ = 17953195260. Its totient is φ = 7891513920.

The previous prime is 12133203013. The next prime is 12133203037. The reversal of 12133203021 is 12030233121.

It can be written as a sum of positive squares in 2 ways, for example, as 5664218121 + 6468984900 = 75261^2 + 80430^2 .

It is not a de Polignac number, because 12133203021 - 2³ = 12133203013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12133202985 and 12133203003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12133203721) 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 11 ways as a sum of consecutive naturals, for example, 16440286 + ... + 16441023.

It is an arithmetic number, because the mean of its divisors is an integer number (1496099605).

Almost surely, 2^12133203021 is an apocalyptic number.

It is an amenable number.

12133203021 is a deficient number, since it is larger than the sum of its proper divisors (5819992239).

12133203021 is a wasteful number, since it uses less digits than its factorization.

12133203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32881356 (or 32881353 counting only the distinct ones).

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

Adding to 12133203021 its reverse (12030233121), we get a palindrome (24163436142).

The spelling of 12133203021 in words is "twelve billion, one hundred thirty-three million, two hundred three thousand, twenty-one".