12111131321 has 8 divisors (see below), whose sum is σ = 12664097280. Its totient is φ = 11560364992.

The previous prime is 12111131287. The next prime is 12111131341. The reversal of 12111131321 is 12313111121.

12111131321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12111131321 - 2⁶ = 12111131257 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 12111131321.

It is not an unprimeable number, because it can be changed into a prime (12111131341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538640 + ... + 560673.

It is an arithmetic number, because the mean of its divisors is an integer number (1583012160).

Almost surely, 2^12111131321 is an apocalyptic number.

It is an amenable number.

12111131321 is a deficient number, since it is larger than the sum of its proper divisors (552965959).

12111131321 is a wasteful number, since it uses less digits than its factorization.

12111131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099815.

The product of its digits is 36, while the sum is 17.

Adding to 12111131321 its reverse (12313111121), we get a palindrome (24424242442).

The spelling of 12111131321 in words is "twelve billion, one hundred eleven million, one hundred thirty-one thousand, three hundred twenty-one".