12011200111 has 4 divisors (see below), whose sum is σ = 12717741312. Its totient is φ = 11304658912.

The previous prime is 12011200099. The next prime is 12011200127. The reversal of 12011200111 is 11100211021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11100211021 = 353 ⋅31445357.

It is not a de Polignac number, because 12011200111 - 2⁷ = 12011199983 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 (12011230111) 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, 353270575 + ... + 353270608.

It is an arithmetic number, because the mean of its divisors is an integer number (3179435328).

Almost surely, 2^12011200111 is an apocalyptic number.

12011200111 is a deficient number, since it is larger than the sum of its proper divisors (706541201).

12011200111 is an equidigital number, since it uses as much as digits as its factorization.

12011200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706541200.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12011200111 its reverse (11100211021), we get a palindrome (23111411132).

The spelling of 12011200111 in words is "twelve billion, eleven million, two hundred thousand, one hundred eleven".