12047911 has 2 divisors, whose sum is σ = 12047912. Its totient is φ = 12047910.

The previous prime is 12047909. The next prime is 12047921. The reversal of 12047911 is 11974021.

It is a weak prime.

It is an emirp because it is prime and its reverse (11974021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12047911 - 2¹ = 12047909 is a prime.

Together with 12047909, 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 (12047921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6023955 + 6023956.

It is an arithmetic number, because the mean of its divisors is an integer number (6023956).

Almost surely, 2^12047911 is an apocalyptic number.

12047911 is a deficient number, since it is larger than the sum of its proper divisors (1).

12047911 is an equidigital number, since it uses as much as digits as its factorization.

12047911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 12047911 is about 3471.0100835348. The cubic root of 12047911 is about 229.2471350399.

The spelling of 12047911 in words is "twelve million, forty-seven thousand, nine hundred eleven".