12112121111101 has 16 divisors (see below), whose sum is σ = 13925555965440. Its totient is φ = 10418816758320.

The previous prime is 12112121111093. The next prime is 12112121111213. The reversal of 12112121111101 is 10111112121121.

It is a cyclic number.

It is not a de Polignac number, because 12112121111101 - 2³ = 12112121111093 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 (12112121141101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35036215 + ... + 35380228.

It is an arithmetic number, because the mean of its divisors is an integer number (870347247840).

Almost surely, 2^{12112121111101} is an apocalyptic number.

12112121111101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12112121111101 is a deficient number, since it is larger than the sum of its proper divisors (1813434854339).

12112121111101 is a wasteful number, since it uses less digits than its factorization.

12112121111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70417296.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 12112121111101 its reverse (10111112121121), we get a palindrome (22223233232222).

The spelling of 12112121111101 in words is "twelve trillion, one hundred twelve billion, one hundred twenty-one million, one hundred eleven thousand, one hundred one".