12112213331 has 4 divisors (see below), whose sum is σ = 12340745712. Its totient is φ = 11883680952.

The previous prime is 12112213327. The next prime is 12112213417. The reversal of 12112213331 is 13331221121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13331221121 = 31 ⋅430039391.

It is a cyclic number.

It is not a de Polignac number, because 12112213331 - 2² = 12112213327 is a prime.

It is a super-2 number, since 2×12112213331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112213231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114266111 + ... + 114266216.

It is an arithmetic number, because the mean of its divisors is an integer number (3085186428).

Almost surely, 2^12112213331 is an apocalyptic number.

12112213331 is a deficient number, since it is larger than the sum of its proper divisors (228532381).

12112213331 is an equidigital number, since it uses as much as digits as its factorization.

12112213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228532380.

The product of its digits is 216, while the sum is 20.

Adding to 12112213331 its reverse (13331221121), we get a palindrome (25443434452).

The spelling of 12112213331 in words is "twelve billion, one hundred twelve million, two hundred thirteen thousand, three hundred thirty-one".