12117727 has 2 divisors, whose sum is σ = 12117728. Its totient is φ = 12117726.

The previous prime is 12117713. The next prime is 12117733. The reversal of 12117727 is 72771121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12117727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12117695 and 12117704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12117797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6058863 + 6058864.

It is an arithmetic number, because the mean of its divisors is an integer number (6058864).

Almost surely, 2^12117727 is an apocalyptic number.

12117727 is a deficient number, since it is larger than the sum of its proper divisors (1).

12117727 is an equidigital number, since it uses as much as digits as its factorization.

12117727 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1372, while the sum is 28.

The square root of 12117727 is about 3481.0525707033. The cubic root of 12117727 is about 229.6891010455.

Adding to 12117727 its reverse (72771121), we get a palindrome (84888848).

The spelling of 12117727 in words is "twelve million, one hundred seventeen thousand, seven hundred twenty-seven".