12112233211 has 6 divisors (see below), whose sum is σ = 13115613660. Its totient is φ = 11180522808.

The previous prime is 12112233193. The next prime is 12112233247. The reversal of 12112233211 is 11233221121.

It is not a de Polignac number, because 12112233211 - 2¹³ = 12112225019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112233271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35834841 + ... + 35835178.

It is an arithmetic number, because the mean of its divisors is an integer number (2185935610).

Almost surely, 2^12112233211 is an apocalyptic number.

12112233211 is a deficient number, since it is larger than the sum of its proper divisors (1003380449).

12112233211 is an equidigital number, since it uses as much as digits as its factorization.

12112233211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71670045 (or 71670032 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 12112233211 its reverse (11233221121), we get a palindrome (23345454332).

The spelling of 12112233211 in words is "twelve billion, one hundred twelve million, two hundred thirty-three thousand, two hundred eleven".