12112112211 has 16 divisors (see below), whose sum is σ = 16604464128. Its totient is φ = 7848705600.

The previous prime is 12112112209. The next prime is 12112112219. The reversal of 12112112211 is 11221121121.

It is a happy number.

It is not a de Polignac number, because 12112112211 - 2¹ = 12112112209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12112112219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148351 + ... + 215016.

It is an arithmetic number, because the mean of its divisors is an integer number (1037779008).

Almost surely, 2^12112112211 is an apocalyptic number.

12112112211 is a deficient number, since it is larger than the sum of its proper divisors (4492351917).

12112112211 is a wasteful number, since it uses less digits than its factorization.

12112112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363682.

The product of its digits is 16, while the sum is 15.

Adding to 12112112211 its reverse (11221121121), we get a palindrome (23333233332).

The spelling of 12112112211 in words is "twelve billion, one hundred twelve million, one hundred twelve thousand, two hundred eleven".