12111441134221 has 16 divisors (see below), whose sum is σ = 14687820338688. Its totient is φ = 9835593969600.

The previous prime is 12111441134213. The next prime is 12111441134251. The reversal of 12111441134221 is 12243114411121.

It is a cyclic number.

It is not a de Polignac number, because 12111441134221 - 2³ = 12111441134213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12111441134221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111441134251) 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, 1366050286 + ... + 1366059151.

It is an arithmetic number, because the mean of its divisors is an integer number (917988771168).

Almost surely, 2^{12111441134221} is an apocalyptic number.

12111441134221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12111441134221 is a deficient number, since it is larger than the sum of its proper divisors (2576379204467).

12111441134221 is a wasteful number, since it uses less digits than its factorization.

12111441134221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2732109492.

The product of its digits is 1536, while the sum is 28.

Adding to 12111441134221 its reverse (12243114411121), we get a palindrome (24354555545342).

The spelling of 12111441134221 in words is "twelve trillion, one hundred eleven billion, four hundred forty-one million, one hundred thirty-four thousand, two hundred twenty-one".