12112100101 has 4 divisors (see below), whose sum is σ = 12121497900. Its totient is φ = 12102702304.

The previous prime is 12112100093. The next prime is 12112100141. The reversal of 12112100101 is 10100121121.

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 9516197601 + 2595902500 = 97551^2 + 50950^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112100101 - 2³ = 12112100093 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 (12112100141) 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, 4696966 + ... + 4699543.

It is an arithmetic number, because the mean of its divisors is an integer number (3030374475).

Almost surely, 2^12112100101 is an apocalyptic number.

It is an amenable number.

12112100101 is a deficient number, since it is larger than the sum of its proper divisors (9397799).

12112100101 is an equidigital number, since it uses as much as digits as its factorization.

12112100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9397798.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12112100101 its reverse (10100121121), we get a palindrome (22212221222).

The spelling of 12112100101 in words is "twelve billion, one hundred twelve million, one hundred thousand, one hundred one".