12000020111 has 4 divisors (see below), whose sum is σ = 12008091552. Its totient is φ = 11991948672.

The previous prime is 12000020099. The next prime is 12000020141. The reversal of 12000020111 is 11102000021.

12000020111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12000020111 - 2³⁰ = 10926278287 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 (12000020141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4033490 + ... + 4036463.

It is an arithmetic number, because the mean of its divisors is an integer number (3002022888).

Almost surely, 2^12000020111 is an apocalyptic number.

12000020111 is a deficient number, since it is larger than the sum of its proper divisors (8071441).

12000020111 is an equidigital number, since it uses as much as digits as its factorization.

12000020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8071440.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12000020111 its reverse (11102000021), we get a palindrome (23102020132).

The spelling of 12000020111 in words is "twelve billion, twenty thousand, one hundred eleven".