12055111807 has 4 divisors (see below), whose sum is σ = 12083082336. Its totient is φ = 12027141280.

The previous prime is 12055111799. The next prime is 12055111841. The reversal of 12055111807 is 70811155021.

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 12055111807 - 2³ = 12055111799 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 (12055111867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13984618 + ... + 13985479.

It is an arithmetic number, because the mean of its divisors is an integer number (3020770584).

Almost surely, 2^12055111807 is an apocalyptic number.

12055111807 is a deficient number, since it is larger than the sum of its proper divisors (27970529).

12055111807 is an equidigital number, since it uses as much as digits as its factorization.

12055111807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27970528.

The product of its (nonzero) digits is 2800, while the sum is 31.

Adding to 12055111807 its reverse (70811155021), we get a palindrome (82866266828).

The spelling of 12055111807 in words is "twelve billion, fifty-five million, one hundred eleven thousand, eight hundred seven".