12112101013 has 4 divisors (see below), whose sum is σ = 12310660108. Its totient is φ = 11913541920.

The previous prime is 12112100999. The next prime is 12112101031. The reversal of 12112101013 is 31010121121.

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 3427165764 + 8684935249 = 58542^2 + 93193^2 .

It is a cyclic number.

It is not a de Polignac number, because 12112101013 - 2²⁵ = 12078546581 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12112100984 and 12112101002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12112105013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99279456 + ... + 99279577.

It is an arithmetic number, because the mean of its divisors is an integer number (3077665027).

Almost surely, 2^12112101013 is an apocalyptic number.

It is an amenable number.

12112101013 is a deficient number, since it is larger than the sum of its proper divisors (198559095).

12112101013 is an equidigital number, since it uses as much as digits as its factorization.

12112101013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198559094.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 12112101013 its reverse (31010121121), we get a palindrome (43122222134).

The spelling of 12112101013 in words is "twelve billion, one hundred twelve million, one hundred one thousand, thirteen".