12112100000001 has 24 divisors (see below), whose sum is σ = 17766903847680. Its totient is φ = 7949936307456.

The previous prime is 12112099999999. The next prime is 12112100000053. The reversal of 12112100000001 is 10000000121121.

It is a happy number.

It is not a de Polignac number, because 12112100000001 - 2¹ = 12112099999999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12112100000501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23878341 + ... + 24380306.

It is an arithmetic number, because the mean of its divisors is an integer number (740287660320).

Almost surely, 2^{12112100000001} is an apocalyptic number.

It is an amenable number.

12112100000001 is a deficient number, since it is larger than the sum of its proper divisors (5654803847679).

12112100000001 is a wasteful number, since it uses less digits than its factorization.

12112100000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48259085 (or 48259082 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12112100000001 its reverse (10000000121121), we get a palindrome (22112100121122).

The spelling of 12112100000001 in words is "twelve trillion, one hundred twelve billion, one hundred million, one", and thus it is an aban number.