12011071 has 4 divisors (see below), whose sum is σ = 12123432. Its totient is φ = 11898712.

The previous prime is 12011057. The next prime is 12011099. The reversal of 12011071 is 17011021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12011071 - 2¹⁷ = 11879999 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 (12011171) 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, 56020 + ... + 56233.

It is an arithmetic number, because the mean of its divisors is an integer number (3030858).

Almost surely, 2^12011071 is an apocalyptic number.

12011071 is a deficient number, since it is larger than the sum of its proper divisors (112361).

12011071 is a wasteful number, since it uses less digits than its factorization.

12011071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112360.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 12011071 is about 3465.6992079521. The cubic root of 12011071 is about 229.0132331553.

Adding to 12011071 its reverse (17011021), we get a palindrome (29022092).

The spelling of 12011071 in words is "twelve million, eleven thousand, seventy-one".