12112100231 has 24 divisors (see below), whose sum is σ = 15586992000. Its totient is φ = 9305041200.

The previous prime is 12112100227. The next prime is 12112100237. The reversal of 12112100231 is 13200121121.

It is not a de Polignac number, because 12112100231 - 2² = 12112100227 is a prime.

It is a super-2 number, since 2×12112100231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112100237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119981 + ... + 196518.

It is an arithmetic number, because the mean of its divisors is an integer number (649458000).

Almost surely, 2^12112100231 is an apocalyptic number.

12112100231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12112100231 is a deficient number, since it is larger than the sum of its proper divisors (3474891769).

12112100231 is a wasteful number, since it uses less digits than its factorization.

12112100231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316595 (or 316588 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12112100231 its reverse (13200121121), we get a palindrome (25312221352).

The spelling of 12112100231 in words is "twelve billion, one hundred twelve million, one hundred thousand, two hundred thirty-one".