12395220137 has 2 divisors, whose sum is σ = 12395220138. Its totient is φ = 12395220136.

The previous prime is 12395220127. The next prime is 12395220139. The reversal of 12395220137 is 73102259321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9227331481 + 3167888656 = 96059^2 + 56284^2 .

It is a cyclic number.

It is not a de Polignac number, because 12395220137 - 2⁴ = 12395220121 is a prime.

Together with 12395220139, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12395220097 and 12395220106.

It is not a weakly prime, because it can be changed into another prime (12395220139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6197610068 + 6197610069.

It is an arithmetic number, because the mean of its divisors is an integer number (6197610069).

Almost surely, 2^12395220137 is an apocalyptic number.

It is an amenable number.

12395220137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12395220137 is an equidigital number, since it uses as much as digits as its factorization.

12395220137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

Adding to 12395220137 its reverse (73102259321), we get a palindrome (85497479458).

The spelling of 12395220137 in words is "twelve billion, three hundred ninety-five million, two hundred twenty thousand, one hundred thirty-seven".