12013100040 has 128 divisors (see below), whose sum is σ = 37010131200. Its totient is φ = 3117588480.

The previous prime is 12013100039. The next prime is 12013100051. The reversal of 12013100040 is 4000131021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12013099989 and 12013100025.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2127541 + ... + 2133179.

It is an arithmetic number, because the mean of its divisors is an integer number (289141650).

Almost surely, 2^12013100040 is an apocalyptic number.

12013100040 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 12013100040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18505065600).

12013100040 is an abundant number, since it is smaller than the sum of its proper divisors (24997031160).

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

12013100040 is a wasteful number, since it uses less digits than its factorization.

12013100040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6127 (or 6123 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12013100040 its reverse (4000131021), we get a palindrome (16013231061).

The spelling of 12013100040 in words is "twelve billion, thirteen million, one hundred thousand, forty".