131130121200 has 120 divisors (see below), whose sum is σ = 452365348848. Its totient is φ = 32278179840.

The previous prime is 131130121189. The next prime is 131130121207. The reversal of 131130121200 is 2121031131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 131130121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131130121207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4187289 + ... + 4218488.

Almost surely, 2^131130121200 is an apocalyptic number.

131130121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131130121200 is an abundant number, since it is smaller than the sum of its proper divisors (321235227648).

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

131130121200 is a wasteful number, since it uses less digits than its factorization.

131130121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8405811 (or 8405800 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 131130121200 its reverse (2121031131), we get a palindrome (133251152331).

The spelling of 131130121200 in words is "one hundred thirty-one billion, one hundred thirty million, one hundred twenty-one thousand, two hundred".