12033221211 has 24 divisors (see below), whose sum is σ = 18972248880. Its totient is φ = 7288704000.

The previous prime is 12033221191. The next prime is 12033221261. The reversal of 12033221211 is 11212233021.

12033221211 is a `hidden beast` number, since 120 + 332 + 2 + 1 + 211 = 666.

It is not a de Polignac number, because 12033221211 - 2²⁵ = 11999666779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12033221261) 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, 144555 + ... + 212043.

It is an arithmetic number, because the mean of its divisors is an integer number (790510370).

Almost surely, 2^12033221211 is an apocalyptic number.

12033221211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12033221211 is a deficient number, since it is larger than the sum of its proper divisors (6939027669).

12033221211 is a wasteful number, since it uses less digits than its factorization.

12033221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69307 (or 69304 counting only the distinct ones).

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

Adding to 12033221211 its reverse (11212233021), we get a palindrome (23245454232).

The spelling of 12033221211 in words is "twelve billion, thirty-three million, two hundred twenty-one thousand, two hundred eleven".