12112122122211 has 4 divisors (see below), whose sum is σ = 16149496162952. Its totient is φ = 8074748081472.

The previous prime is 12112122122209. The next prime is 12112122122263. The reversal of 12112122122211 is 11222122121121.

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

It is not a de Polignac number, because 12112122122211 - 2¹ = 12112122122209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112122122411) 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, 2018687020366 + ... + 2018687020371.

It is an arithmetic number, because the mean of its divisors is an integer number (4037374040738).

Almost surely, 2^{12112122122211} is an apocalyptic number.

12112122122211 is a deficient number, since it is larger than the sum of its proper divisors (4037374040741).

12112122122211 is an equidigital number, since it uses as much as digits as its factorization.

12112122122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4037374040740.

The product of its digits is 128, while the sum is 21.

Adding to 12112122122211 its reverse (11222122121121), we get a palindrome (23334244243332).

The spelling of 12112122122211 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".