12132400520000 has 70 divisors (see below), whose sum is σ = 30084410358618. Its totient is φ = 4852960192000.

The previous prime is 12132400519949. The next prime is 12132400520011. The reversal of 12132400520000 is 2500423121.

It can be written as a sum of positive squares in 5 ways, for example, as 6949930057984 + 5182470462016 = 2636272^2 + 2276504^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 151615007 + ... + 151695006.

Almost surely, 2^{12132400520000} is an apocalyptic number.

12132400520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12132400520000 is an abundant number, since it is smaller than the sum of its proper divisors (17952009838618).

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

12132400520000 is an frugal number, since it uses more digits than its factorization.

12132400520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303310045 (or 303310020 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 12132400520000 its reverse (2500423121), we get a palindrome (12134900943121).

The spelling of 12132400520000 in words is "twelve trillion, one hundred thirty-two billion, four hundred million, five hundred twenty thousand".