12311111201 has 8 divisors (see below), whose sum is σ = 12545162280. Its totient is φ = 12077125632.

The previous prime is 12311111147. The next prime is 12311111279. The reversal of 12311111201 is 10211111321.

12311111201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2643502225 + 9667608976 = 51415^2 + 98324^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311111201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12311111401) 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, 541601 + ... + 563873.

It is an arithmetic number, because the mean of its divisors is an integer number (1568145285).

Almost surely, 2^12311111201 is an apocalyptic number.

It is an amenable number.

12311111201 is a deficient number, since it is larger than the sum of its proper divisors (234051079).

12311111201 is a wasteful number, since it uses less digits than its factorization.

12311111201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32755.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12311111201 its reverse (10211111321), we get a palindrome (22522222522).

The spelling of 12311111201 in words is "twelve billion, three hundred eleven million, one hundred eleven thousand, two hundred one".