12133220211 has 18 divisors (see below), whose sum is σ = 20387112252. Its totient is φ = 6933268440.

The previous prime is 12133220191. The next prime is 12133220221. The reversal of 12133220211 is 11202233121.

12133220211 is a `hidden beast` number, since 121 + 332 + 2 + 0 + 211 = 666.

It is not a de Polignac number, because 12133220211 - 2⁹ = 12133219699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12133220221) 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, 13756045 + ... + 13756926.

Almost surely, 2^12133220211 is an apocalyptic number.

12133220211 is a deficient number, since it is larger than the sum of its proper divisors (8253892041).

12133220211 is a wasteful number, since it uses less digits than its factorization.

12133220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27512991 (or 27512981 counting only the distinct ones).

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

Adding to 12133220211 its reverse (11202233121), we get a palindrome (23335453332).

The spelling of 12133220211 in words is "twelve billion, one hundred thirty-three million, two hundred twenty thousand, two hundred eleven".