12040131220 has 96 divisors (see below), whose sum is σ = 27671726880. Its totient is φ = 4399948800.

The previous prime is 12040131209. The next prime is 12040131263. The reversal of 12040131220 is 2213104021.

12040131220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 16 ways, for example, as 6366124944 + 5674006276 = 79788^2 + 75326^2 .

It is a super-3 number, since 3×12040131220³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12040131194 and 12040131203.

It is a congruent number.

It is an unprimeable number.

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, 4436584 + ... + 4439296.

It is an arithmetic number, because the mean of its divisors is an integer number (288247155).

Almost surely, 2^12040131220 is an apocalyptic number.

12040131220 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 12040131220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13835863440).

12040131220 is an abundant number, since it is smaller than the sum of its proper divisors (15631595660).

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

12040131220 is a wasteful number, since it uses less digits than its factorization.

12040131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2862 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12040131220 its reverse (2213104021), we get a palindrome (14253235241).

The spelling of 12040131220 in words is "twelve billion, forty million, one hundred thirty-one thousand, two hundred twenty".