12112102121101 has 4 divisors (see below), whose sum is σ = 12113088380604. Its totient is φ = 12111115861600.

The previous prime is 12112102121071. The next prime is 12112102121143. The reversal of 12112102121101 is 10112120121121.

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 7107369381225 + 5004732739876 = 2665965^2 + 2237126^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112102121101 - 2¹⁹ = 12112101596813 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 (12112102221101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 493111330 + ... + 493135891.

It is an arithmetic number, because the mean of its divisors is an integer number (3028272095151).

Almost surely, 2^{12112102121101} is an apocalyptic number.

It is an amenable number.

12112102121101 is a deficient number, since it is larger than the sum of its proper divisors (986259503).

12112102121101 is an equidigital number, since it uses as much as digits as its factorization.

12112102121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986259502.

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

Adding to 12112102121101 its reverse (10112120121121), we get a palindrome (22224222242222).

The spelling of 12112102121101 in words is "twelve trillion, one hundred twelve billion, one hundred two million, one hundred twenty-one thousand, one hundred one".