12112201121 has 8 divisors (see below), whose sum is σ = 12139756200. Its totient is φ = 12084671232.

The previous prime is 12112201093. The next prime is 12112201147. The reversal of 12112201121 is 12110221121.

It can be written as a sum of positive squares in 4 ways, for example, as 1886946721 + 10225254400 = 43439^2 + 101120^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12112201121 - 2¹⁰ = 12112200097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112201096 and 12112201105.

It is not an unprimeable number, because it can be changed into a prime (12112201421) 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, 1212455 + ... + 1222403.

It is an arithmetic number, because the mean of its divisors is an integer number (1517469525).

Almost surely, 2^12112201121 is an apocalyptic number.

It is an amenable number.

12112201121 is a deficient number, since it is larger than the sum of its proper divisors (27555079).

12112201121 is an equidigital number, since it uses as much as digits as its factorization.

12112201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12595.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12112201121 its reverse (12110221121), we get a palindrome (24222422242).

The spelling of 12112201121 in words is "twelve billion, one hundred twelve million, two hundred one thousand, one hundred twenty-one".