12011087 has 4 divisors (see below), whose sum is σ = 13103016. Its totient is φ = 10919160.

The previous prime is 12011057. The next prime is 12011099. The reversal of 12011087 is 78011021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78011021 = 11 ⋅7091911.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011087 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 (12011047) 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, 545948 + ... + 545969.

It is an arithmetic number, because the mean of its divisors is an integer number (3275754).

Almost surely, 2^12011087 is an apocalyptic number.

12011087 is a deficient number, since it is larger than the sum of its proper divisors (1091929).

12011087 is a wasteful number, since it uses less digits than its factorization.

12011087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091928.

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 12011087 is about 3465.7015162879. The cubic root of 12011087 is about 229.0133348451.

The spelling of 12011087 in words is "twelve million, eleven thousand, eighty-seven".