12112011113 has 4 divisors (see below), whose sum is σ = 12112333968. Its totient is φ = 12111688260.

The previous prime is 12112011089. The next prime is 12112011137. The reversal of 12112011113 is 31111021121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31111021121 = 34171 ⋅910451.

It is an interprime number because it is at equal distance from previous prime (12112011089) and next prime (12112011137).

It is a cyclic number.

It is not a de Polignac number, because 12112011113 - 2⁶ = 12112011049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112011143) 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, 96431 + ... + 183092.

It is an arithmetic number, because the mean of its divisors is an integer number (3028083492).

Almost surely, 2^12112011113 is an apocalyptic number.

It is an amenable number.

12112011113 is a deficient number, since it is larger than the sum of its proper divisors (322855).

12112011113 is an equidigital number, since it uses as much as digits as its factorization.

12112011113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322854.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 12112011113 its reverse (31111021121), we get a palindrome (43223032234).

The spelling of 12112011113 in words is "twelve billion, one hundred twelve million, eleven thousand, one hundred thirteen".