12111320112321 has 16 divisors (see below), whose sum is σ = 16181430644160. Its totient is φ = 8057715344640.

The previous prime is 12111320112257. The next prime is 12111320112343. The reversal of 12111320112321 is 12321102311121.

It is not a de Polignac number, because 12111320112321 - 2⁶ = 12111320112257 is a prime.

It is a super-2 number, since 2×12111320112321² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12111320312321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12219285 + ... + 13173213.

It is an arithmetic number, because the mean of its divisors is an integer number (1011339415260).

Almost surely, 2^{12111320112321} is an apocalyptic number.

It is an amenable number.

12111320112321 is a deficient number, since it is larger than the sum of its proper divisors (4070110531839).

12111320112321 is an equidigital number, since it uses as much as digits as its factorization.

12111320112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962576.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12111320112321 its reverse (12321102311121), we get a palindrome (24432422423442).

The spelling of 12111320112321 in words is "twelve trillion, one hundred eleven billion, three hundred twenty million, one hundred twelve thousand, three hundred twenty-one".