12112101211 has 12 divisors (see below), whose sum is σ = 14150070792. Its totient is φ = 10337234208.

The previous prime is 12112101191. The next prime is 12112101263. The reversal of 12112101211 is 11210121121.

It is a happy number.

It is not a de Polignac number, because 12112101211 - 2⁵ = 12112101179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112101191 and 12112101200.

It is not an unprimeable number, because it can be changed into a prime (12116101211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 519025 + ... + 541858.

It is an arithmetic number, because the mean of its divisors is an integer number (1179172566).

Almost surely, 2^12112101211 is an apocalyptic number.

12112101211 is a deficient number, since it is larger than the sum of its proper divisors (2037969581).

12112101211 is a wasteful number, since it uses less digits than its factorization.

12112101211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061130 (or 1061123 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12112101211 its reverse (11210121121), we get a palindrome (23322222332).

The spelling of 12112101211 in words is "twelve billion, one hundred twelve million, one hundred one thousand, two hundred eleven".