12112211213 has 2 divisors, whose sum is σ = 12112211214. Its totient is φ = 12112211212.

The previous prime is 12112211207. The next prime is 12112211227. The reversal of 12112211213 is 31211221121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11889067369 + 223143844 = 109037^2 + 14938^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112211213 - 2¹⁰ = 12112210189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12112211191 and 12112211200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112211273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056105606 + 6056105607.

It is an arithmetic number, because the mean of its divisors is an integer number (6056105607).

Almost surely, 2^12112211213 is an apocalyptic number.

It is an amenable number.

12112211213 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112211213 is an equidigital number, since it uses as much as digits as its factorization.

12112211213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 17.

Adding to 12112211213 its reverse (31211221121), we get a palindrome (43323432334).

It can be divided in two parts, 1211221121 and 3, that multiplied together give a palindrome (3633663363).

The spelling of 12112211213 in words is "twelve billion, one hundred twelve million, two hundred eleven thousand, two hundred thirteen".