11997127 has 4 divisors (see below), whose sum is σ = 12004960. Its totient is φ = 11989296.

The previous prime is 11997109. The next prime is 11997137. The reversal of 11997127 is 72179911.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11997127 - 2¹¹ = 11995079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11997107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783 + ... + 4960.

It is an arithmetic number, because the mean of its divisors is an integer number (3001240).

Almost surely, 2^11997127 is an apocalyptic number.

11997127 is a deficient number, since it is larger than the sum of its proper divisors (7833).

11997127 is an equidigital number, since it uses as much as digits as its factorization.

11997127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7832.

The product of its digits is 7938, while the sum is 37.

The square root of 11997127 is about 3463.6869084835. The cubic root of 11997127 is about 228.9245761411.

The spelling of 11997127 in words is "eleven million, nine hundred ninety-seven thousand, one hundred twenty-seven".