12310131201221 has 32 divisors (see below), whose sum is σ = 14557829314560. Its totient is φ = 10186385817600.

The previous prime is 12310131201061. The next prime is 12310131201227. The reversal of 12310131201221 is 12210213101321.

It is a cyclic number.

It is not a de Polignac number, because 12310131201221 - 2³⁰ = 12309057459397 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12310131201193 and 12310131201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310131201227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 208584965 + ... + 208643973.

It is an arithmetic number, because the mean of its divisors is an integer number (454932166080).

Almost surely, 2^{12310131201221} is an apocalyptic number.

It is an amenable number.

12310131201221 is a deficient number, since it is larger than the sum of its proper divisors (2247698113339).

12310131201221 is a wasteful number, since it uses less digits than its factorization.

12310131201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61365.

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

Adding to 12310131201221 its reverse (12210213101321), we get a palindrome (24520344302542).

The spelling of 12310131201221 in words is "twelve trillion, three hundred ten billion, one hundred thirty-one million, two hundred one thousand, two hundred twenty-one".