12033221121 has 24 divisors (see below), whose sum is σ = 18238409280. Its totient is φ = 7630466976.

The previous prime is 12033221119. The next prime is 12033221143. The reversal of 12033221121 is 12112233021.

12033221121 is a `hidden beast` number, since 120 + 332 + 211 + 2 + 1 = 666.

It is not a de Polignac number, because 12033221121 - 2¹ = 12033221119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12033221094 and 12033221103.

It is not an unprimeable number, because it can be changed into a prime (12033221191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 125326 + ... + 199431.

It is an arithmetic number, because the mean of its divisors is an integer number (759933720).

Almost surely, 2^12033221121 is an apocalyptic number.

It is an amenable number.

12033221121 is a deficient number, since it is larger than the sum of its proper divisors (6205188159).

12033221121 is a wasteful number, since it uses less digits than its factorization.

12033221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324965 (or 324962 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12033221121 its reverse (12112233021), we get a palindrome (24145454142).

The spelling of 12033221121 in words is "twelve billion, thirty-three million, two hundred twenty-one thousand, one hundred twenty-one".