12112101121 has 4 divisors (see below), whose sum is σ = 12162359044. Its totient is φ = 12061843200.

The previous prime is 12112101101. The next prime is 12112101179. The reversal of 12112101121 is 12110121121.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5990760000 + 6121341121 = 77400^2 + 78239^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112101121 - 2¹³ = 12112092929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12112101101) 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, 25128600 + ... + 25129081.

It is an arithmetic number, because the mean of its divisors is an integer number (3040589761).

Almost surely, 2^12112101121 is an apocalyptic number.

It is an amenable number.

12112101121 is a deficient number, since it is larger than the sum of its proper divisors (50257923).

12112101121 is an equidigital number, since it uses as much as digits as its factorization.

12112101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50257922.

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

Adding to 12112101121 its reverse (12110121121), we get a palindrome (24222222242).

The spelling of 12112101121 in words is "twelve billion, one hundred twelve million, one hundred one thousand, one hundred twenty-one".