12111102211 has 8 divisors (see below), whose sum is σ = 13044153584. Its totient is φ = 11178254880.

The previous prime is 12111102193. The next prime is 12111102247. The reversal of 12111102211 is 11220111121.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-12111102211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12111102191 and 12111102200.

It is not an unprimeable number, because it can be changed into a prime (12111102281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85900 + ... + 177766.

It is an arithmetic number, because the mean of its divisors is an integer number (1630519198).

Almost surely, 2^12111102211 is an apocalyptic number.

12111102211 is a deficient number, since it is larger than the sum of its proper divisors (933051373).

12111102211 is a wasteful number, since it uses less digits than its factorization.

12111102211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102021.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12111102211 its reverse (11220111121), we get a palindrome (23331213332).

The spelling of 12111102211 in words is "twelve billion, one hundred eleven million, one hundred two thousand, two hundred eleven".