12082211111 has 4 divisors (see below), whose sum is σ = 12082838424. Its totient is φ = 12081583800.

The previous prime is 12082211051. The next prime is 12082211129. The reversal of 12082211111 is 11111228021.

It is a happy number.

12082211111 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 12082211111 - 2⁶ = 12082211047 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 (12082211311) 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, 283820 + ... + 323601.

It is an arithmetic number, because the mean of its divisors is an integer number (3020709606).

Almost surely, 2^12082211111 is an apocalyptic number.

12082211111 is a deficient number, since it is larger than the sum of its proper divisors (627313).

12082211111 is an equidigital number, since it uses as much as digits as its factorization.

12082211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627312.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 12082211111 its reverse (11111228021), we get a palindrome (23193439132).

The spelling of 12082211111 in words is "twelve billion, eighty-two million, two hundred eleven thousand, one hundred eleven".