12020412040 has 128 divisors (see below), whose sum is σ = 33458261760. Its totient is φ = 3784725504.

The previous prime is 12020412013. The next prime is 12020412049. The reversal of 12020412040 is 4021402021.

12020412040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12020412040² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12020412049) 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 31 ways as a sum of consecutive naturals, for example, 708699 + ... + 725461.

It is an arithmetic number, because the mean of its divisors is an integer number (261392670).

Almost surely, 2^12020412040 is an apocalyptic number.

12020412040 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 12020412040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16729130880).

12020412040 is an abundant number, since it is smaller than the sum of its proper divisors (21437849720).

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

12020412040 is a wasteful number, since it uses less digits than its factorization.

12020412040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16991 (or 16987 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12020412040 its reverse (4021402021), we get a palindrome (16041814061).

The spelling of 12020412040 in words is "twelve billion, twenty million, four hundred twelve thousand, forty".