12211100111 has 8 divisors (see below), whose sum is σ = 13956252960. Its totient is φ = 10466124768.

The previous prime is 12211100009. The next prime is 12211100147. The reversal of 12211100111 is 11100111221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12211100111 is a prime.

It is a super-2 number, since 2×12211100111² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12211100092 and 12211100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211100191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176045 + ... + 235401.

It is an arithmetic number, because the mean of its divisors is an integer number (1744531620).

Almost surely, 2^12211100111 is an apocalyptic number.

12211100111 is a deficient number, since it is larger than the sum of its proper divisors (1745152849).

12211100111 is an equidigital number, since it uses as much as digits as its factorization.

12211100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88753.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 12211100111 its reverse (11100111221), we get a palindrome (23311211332).

The spelling of 12211100111 in words is "twelve billion, two hundred eleven million, one hundred thousand, one hundred eleven".