12011023231321 has 4 divisors (see below), whose sum is σ = 12717554009652. Its totient is φ = 11304492452992.

The previous prime is 12011023231301. The next prime is 12011023231369. The reversal of 12011023231321 is 12313232011021.

12011023231321 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 8424715231296 + 3586308000025 = 2902536^2 + 1893755^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011023231321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12011023231292 and 12011023231301.

It is not an unprimeable number, because it can be changed into a prime (12011023231301) 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, 353265389140 + ... + 353265389173.

It is an arithmetic number, because the mean of its divisors is an integer number (3179388502413).

Almost surely, 2^{12011023231321} is an apocalyptic number.

It is an amenable number.

12011023231321 is a deficient number, since it is larger than the sum of its proper divisors (706530778331).

12011023231321 is an equidigital number, since it uses as much as digits as its factorization.

12011023231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706530778330.

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

Adding to 12011023231321 its reverse (12313232011021), we get a palindrome (24324255242342).

The spelling of 12011023231321 in words is "twelve trillion, eleven billion, twenty-three million, two hundred thirty-one thousand, three hundred twenty-one".