12120120040 has 32 divisors (see below), whose sum is σ = 31166023680. Its totient is φ = 4155469632.

The previous prime is 12120120011. The next prime is 12120120049. The reversal of 12120120040 is 4002102121.

It is a happy number.

12120120040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12120120040.

It is not an unprimeable number, because it can be changed into a prime (12120120049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21642792 + ... + 21643351.

It is an arithmetic number, because the mean of its divisors is an integer number (973938240).

Almost surely, 2^12120120040 is an apocalyptic number.

12120120040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120120040 is an abundant number, since it is smaller than the sum of its proper divisors (19045903640).

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

12120120040 is a wasteful number, since it uses less digits than its factorization.

12120120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43286161 (or 43286157 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12120120040 its reverse (4002102121), we get a palindrome (16122222161).

The spelling of 12120120040 in words is "twelve billion, one hundred twenty million, one hundred twenty thousand, forty".