12011021212133 has 4 divisors (see below), whose sum is σ = 12533239525728. Its totient is φ = 11488802898540.

The previous prime is 12011021212079. The next prime is 12011021212139. The reversal of 12011021212133 is 33121212011021.

12011021212133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12011021212133 - 2²² = 12011017017829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011021212139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261109156763 + ... + 261109156808.

It is an arithmetic number, because the mean of its divisors is an integer number (3133309881432).

Almost surely, 2^{12011021212133} is an apocalyptic number.

It is an amenable number.

12011021212133 is a deficient number, since it is larger than the sum of its proper divisors (522218313595).

12011021212133 is an equidigital number, since it uses as much as digits as its factorization.

12011021212133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522218313594.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12011021212133 its reverse (33121212011021), we get a palindrome (45132233223154).

The spelling of 12011021212133 in words is "twelve trillion, eleven billion, twenty-one million, two hundred twelve thousand, one hundred thirty-three".