12011111011 has 8 divisors (see below), whose sum is σ = 12123647360. Its totient is φ = 11898617472.

The previous prime is 12011110973. The next prime is 12011111033. The reversal of 12011111011 is 11011111021.

12011111011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12011111011 - 2⁷ = 12011110883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12011111081) 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 7 ways as a sum of consecutive naturals, for example, 959851 + ... + 972283.

It is an arithmetic number, because the mean of its divisors is an integer number (1515455920).

Almost surely, 2^12011111011 is an apocalyptic number.

12011111011 is a deficient number, since it is larger than the sum of its proper divisors (112536349).

12011111011 is a wasteful number, since it uses less digits than its factorization.

12011111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21405.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 12011111011 its sum of digits (10), we get a palindrome (12011111021).

Adding to 12011111011 its reverse (11011111021), we get a palindrome (23022222032).

The spelling of 12011111011 in words is "twelve billion, eleven million, one hundred eleven thousand, eleven".