131211244412200 has 96 divisors (see below), whose sum is σ = 307078200424800. Its totient is φ = 52138925763840.

The previous prime is 131211244412189. The next prime is 131211244412207. The reversal of 131211244412200 is 2214442112131.

It is not an unprimeable number, because it can be changed into a prime (131211244412207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33854527 + ... + 37530673.

It is an arithmetic number, because the mean of its divisors is an integer number (3198731254425).

Almost surely, 2^{131211244412200} is an apocalyptic number.

131211244412200 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 131211244412200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153539100212400).

131211244412200 is an abundant number, since it is smaller than the sum of its proper divisors (175866956012600).

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

131211244412200 is a wasteful number, since it uses less digits than its factorization.

131211244412200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3677339 (or 3677330 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 131211244412200 its reverse (2214442112131), we get a palindrome (133425686524331).

The spelling of 131211244412200 in words is "one hundred thirty-one trillion, two hundred eleven billion, two hundred forty-four million, four hundred twelve thousand, two hundred".