12000111011 has 32 divisors (see below), whose sum is σ = 15221219328. Its totient is φ = 9217866240.

The previous prime is 12000110971. The next prime is 12000111037. The reversal of 12000111011 is 11011100021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12000111011 - 2¹⁰ = 12000109987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12000111011.

It is not an unprimeable number, because it can be changed into a prime (12000111061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 600521 + ... + 620181.

It is an arithmetic number, because the mean of its divisors is an integer number (475663104).

Almost surely, 2^12000111011 is an apocalyptic number.

12000111011 is a deficient number, since it is larger than the sum of its proper divisors (3221108317).

12000111011 is a wasteful number, since it uses less digits than its factorization.

12000111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19931.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12000111011 its reverse (11011100021), we get a palindrome (23011211032).

The spelling of 12000111011 in words is "twelve billion, one hundred eleven thousand, eleven".