12110005091 has 4 divisors (see below), whose sum is σ = 12747373800. Its totient is φ = 11472636384.

The previous prime is 12110005067. The next prime is 12110005093. The reversal of 12110005091 is 19050001121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19050001121 = 167 ⋅114071863.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12110005091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12110005093) 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, 318684326 + ... + 318684363.

It is an arithmetic number, because the mean of its divisors is an integer number (3186843450).

Almost surely, 2^12110005091 is an apocalyptic number.

12110005091 is a deficient number, since it is larger than the sum of its proper divisors (637368709).

12110005091 is an equidigital number, since it uses as much as digits as its factorization.

12110005091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637368708.

The product of its (nonzero) digits is 90, while the sum is 20.

The spelling of 12110005091 in words is "twelve billion, one hundred ten million, five thousand, ninety-one".