12112120261 has 2 divisors, whose sum is σ = 12112120262. Its totient is φ = 12112120260.

The previous prime is 12112120259. The next prime is 12112120327. The reversal of 12112120261 is 16202121121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9962036100 + 2150084161 = 99810^2 + 46369^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112120261 - 2¹ = 12112120259 is a prime.

Together with 12112120259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12112120201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6056060130 + 6056060131.

It is an arithmetic number, because the mean of its divisors is an integer number (6056060131).

Almost surely, 2^12112120261 is an apocalyptic number.

It is an amenable number.

12112120261 is a deficient number, since it is larger than the sum of its proper divisors (1).

12112120261 is an equidigital number, since it uses as much as digits as its factorization.

12112120261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12112120261 its reverse (16202121121), we get a palindrome (28314241382).

The spelling of 12112120261 in words is "twelve billion, one hundred twelve million, one hundred twenty thousand, two hundred sixty-one".