12112064140 has 96 divisors (see below), whose sum is σ = 29259014400. Its totient is φ = 4165297920.

The previous prime is 12112064131. The next prime is 12112064143. The reversal of 12112064140 is 4146021121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (12112064143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2752422 + ... + 2756818.

It is an arithmetic number, because the mean of its divisors is an integer number (304781400).

Almost surely, 2^12112064140 is an apocalyptic number.

12112064140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12112064140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14629507200).

12112064140 is an abundant number, since it is smaller than the sum of its proper divisors (17146950260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12112064140 is a wasteful number, since it uses less digits than its factorization.

12112064140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095 (or 5093 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12112064140 its reverse (4146021121), we get a palindrome (16258085261).

The spelling of 12112064140 in words is "twelve billion, one hundred twelve million, sixty-four thousand, one hundred forty".