12112222211231 has 2 divisors, whose sum is σ = 12112222211232. Its totient is φ = 12112222211230.

The previous prime is 12112222211189. The next prime is 12112222211237. The reversal of 12112222211231 is 13211222221121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112222211231 is a prime.

It is a super-2 number, since 2×12112222211231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12112222211197 and 12112222211206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112222211237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056111105615 + 6056111105616.

It is an arithmetic number, because the mean of its divisors is an integer number (6056111105616).

Almost surely, 2^{12112222211231} is an apocalyptic number.

12112222211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112222211231 is an equidigital number, since it uses as much as digits as its factorization.

12112222211231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 384, while the sum is 23.

Adding to 12112222211231 its reverse (13211222221121), we get a palindrome (25323444432352).

The spelling of 12112222211231 in words is "twelve trillion, one hundred twelve billion, two hundred twenty-two million, two hundred eleven thousand, two hundred thirty-one".