12111010020111 has 4 divisors (see below), whose sum is σ = 16148013360152. Its totient is φ = 8074006680072.

The previous prime is 12111010020047. The next prime is 12111010020149. The reversal of 12111010020111 is 11102001011121.

12111010020111 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 not a de Polignac number, because 12111010020111 - 2⁶ = 12111010020047 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 (12111010020611) 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, 2018501670016 + ... + 2018501670021.

It is an arithmetic number, because the mean of its divisors is an integer number (4037003340038).

Almost surely, 2^{12111010020111} is an apocalyptic number.

12111010020111 is a deficient number, since it is larger than the sum of its proper divisors (4037003340041).

12111010020111 is an equidigital number, since it uses as much as digits as its factorization.

12111010020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4037003340040.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12111010020111 its reverse (11102001011121), we get a palindrome (23213011031232).

The spelling of 12111010020111 in words is "twelve trillion, one hundred eleven billion, ten million, twenty thousand, one hundred eleven".