12031022131321 has 4 divisors (see below), whose sum is σ = 12155053287412. Its totient is φ = 11906990975232.

The previous prime is 12031022131253. The next prime is 12031022131439. The reversal of 12031022131321 is 12313122013021.

12031022131321 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.

It can be written as a sum of positive squares in 2 ways, for example, as 4993615929600 + 7037406201721 = 2234640^2 + 2652811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031022131321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12031022131292 and 12031022131301.

It is not an unprimeable number, because it can be changed into a prime (12031022138321) 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, 62015577900 + ... + 62015578093.

It is an arithmetic number, because the mean of its divisors is an integer number (3038763321853).

Almost surely, 2^{12031022131321} is an apocalyptic number.

It is an amenable number.

12031022131321 is a deficient number, since it is larger than the sum of its proper divisors (124031156091).

12031022131321 is an equidigital number, since it uses as much as digits as its factorization.

12031022131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124031156090.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 12031022131321 its reverse (12313122013021), we get a palindrome (24344144144342).

The spelling of 12031022131321 in words is "twelve trillion, thirty-one billion, twenty-two million, one hundred thirty-one thousand, three hundred twenty-one".