12112201222211 has 4 divisors (see below), whose sum is σ = 12113661763632. Its totient is φ = 12110740680792.

The previous prime is 12112201222139. The next prime is 12112201222237. The reversal of 12112201222211 is 11222210221121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12112201222211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112201222271) 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, 730258271 + ... + 730274856.

It is an arithmetic number, because the mean of its divisors is an integer number (3028415440908).

Almost surely, 2^{12112201222211} is an apocalyptic number.

12112201222211 is a deficient number, since it is larger than the sum of its proper divisors (1460541421).

12112201222211 is an equidigital number, since it uses as much as digits as its factorization.

12112201222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460541420.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12112201222211 its reverse (11222210221121), we get a palindrome (23334411443332).

The spelling of 12112201222211 in words is "twelve trillion, one hundred twelve billion, two hundred one million, two hundred twenty-two thousand, two hundred eleven".