12120131200 has 96 divisors (see below), whose sum is σ = 30000139020. Its totient is φ = 4838400000.

The previous prime is 12120131143. The next prime is 12120131263. The reversal of 12120131200 is 213102121.

It can be written as a sum of positive squares in 6 ways, for example, as 3342689856 + 8777441344 = 57816^2 + 93688^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1727700 + ... + 1734700.

Almost surely, 2^12120131200 is an apocalyptic number.

12120131200 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 12120131200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15000069510).

12120131200 is an abundant number, since it is smaller than the sum of its proper divisors (17880007820).

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

12120131200 is an equidigital number, since it uses as much as digits as its factorization.

12120131200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7566 (or 7549 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12120131200 its reverse (213102121), we get a palindrome (12333233321).

The spelling of 12120131200 in words is "twelve billion, one hundred twenty million, one hundred thirty-one thousand, two hundred".