12138102727 has 2 divisors, whose sum is σ = 12138102728. Its totient is φ = 12138102726.

The previous prime is 12138102719. The next prime is 12138102797. The reversal of 12138102727 is 72720183121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12138102727 - 2³ = 12138102719 is a prime.

It is a super-2 number, since 2×12138102727² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12138102692 and 12138102701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12138102707) 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 as a sum of consecutive naturals, namely, 6069051363 + 6069051364.

It is an arithmetic number, because the mean of its divisors is an integer number (6069051364).

Almost surely, 2^12138102727 is an apocalyptic number.

12138102727 is a deficient number, since it is larger than the sum of its proper divisors (1).

12138102727 is an equidigital number, since it uses as much as digits as its factorization.

12138102727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

Adding to 12138102727 its reverse (72720183121), we get a palindrome (84858285848).

The spelling of 12138102727 in words is "twelve billion, one hundred thirty-eight million, one hundred two thousand, seven hundred twenty-seven".