12112321221113 has 4 divisors (see below), whose sum is σ = 12112915186548. Its totient is φ = 12111727255680.

The previous prime is 12112321221107. The next prime is 12112321221167. The reversal of 12112321221113 is 31112212321121.

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 7572579356224 + 4539741864889 = 2751832^2 + 2130667^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112321221113 - 2²² = 12112317026809 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12112321221313) 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, 296952128 + ... + 296992913.

It is an arithmetic number, because the mean of its divisors is an integer number (3028228796637).

Almost surely, 2^{12112321221113} is an apocalyptic number.

It is an amenable number.

12112321221113 is a deficient number, since it is larger than the sum of its proper divisors (593965435).

12112321221113 is an equidigital number, since it uses as much as digits as its factorization.

12112321221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593965434.

The product of its digits is 288, while the sum is 23.

Adding to 12112321221113 its reverse (31112212321121), we get a palindrome (43224533542234).

The spelling of 12112321221113 in words is "twelve trillion, one hundred twelve billion, three hundred twenty-one million, two hundred twenty-one thousand, one hundred thirteen".