12012111133 has 16 divisors (see below), whose sum is σ = 13153536000. Its totient is φ = 10879009200.

The previous prime is 12012111121. The next prime is 12012111143. The reversal of 12012111133 is 33111121021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12012111133 - 2⁵ = 12012111101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012111143) 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 15 ways as a sum of consecutive naturals, for example, 3791316 + ... + 3794482.

It is an arithmetic number, because the mean of its divisors is an integer number (822096000).

Almost surely, 2^12012111133 is an apocalyptic number.

It is an amenable number.

12012111133 is a deficient number, since it is larger than the sum of its proper divisors (1141424867).

12012111133 is a wasteful number, since it uses less digits than its factorization.

12012111133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4368.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12012111133 its reverse (33111121021), we get a palindrome (45123232154).

The spelling of 12012111133 in words is "twelve billion, twelve million, one hundred eleven thousand, one hundred thirty-three".