12180111011 has 8 divisors (see below), whose sum is σ = 12448192848. Its totient is φ = 11914236000.

The previous prime is 12180111007. The next prime is 12180111061. The reversal of 12180111011 is 11011108121.

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 12180111011 - 2² = 12180111007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12180111061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540545 + ... + 562626.

It is an arithmetic number, because the mean of its divisors is an integer number (1556024106).

Almost surely, 2^12180111011 is an apocalyptic number.

12180111011 is a deficient number, since it is larger than the sum of its proper divisors (268081837).

12180111011 is a wasteful number, since it uses less digits than its factorization.

12180111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103413.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 12180111011 its reverse (11011108121), we get a palindrome (23191219132).

The spelling of 12180111011 in words is "twelve billion, one hundred eighty million, one hundred eleven thousand, eleven".