12210212101111 has 4 divisors (see below), whose sum is σ = 12210219143224. Its totient is φ = 12210205059000.

The previous prime is 12210212101099. The next prime is 12210212101159. The reversal of 12210212101111 is 11110121201221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210212101111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210212101181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1110796 + ... + 5065006.

It is an arithmetic number, because the mean of its divisors is an integer number (3052554785806).

Almost surely, 2^{12210212101111} is an apocalyptic number.

12210212101111 is a deficient number, since it is larger than the sum of its proper divisors (7042113).

12210212101111 is an equidigital number, since it uses as much as digits as its factorization.

12210212101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7042112.

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

Adding to 12210212101111 its reverse (11110121201221), we get a palindrome (23320333302332).

The spelling of 12210212101111 in words is "twelve trillion, two hundred ten billion, two hundred twelve million, one hundred one thousand, one hundred eleven".