12100124142 has 64 divisors (see below), whose sum is σ = 28085736960. Its totient is φ = 3854233152.

The previous prime is 12100124131. The next prime is 12100124143. The reversal of 12100124142 is 24142100121.

It is a super-2 number, since 2×12100124142² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100124143) 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, 1440258 + ... + 1448634.

It is an arithmetic number, because the mean of its divisors is an integer number (438839640).

Almost surely, 2^12100124142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12100124142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14042868480).

12100124142 is an abundant number, since it is smaller than the sum of its proper divisors (15985612818).

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

12100124142 is a wasteful number, since it uses less digits than its factorization.

12100124142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9574 (or 9568 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12100124142 its reverse (24142100121), we get a palindrome (36242224263).

The spelling of 12100124142 in words is "twelve billion, one hundred million, one hundred twenty-four thousand, one hundred forty-two".