131200113121 has 48 divisors (see below), whose sum is σ = 178035656832. Its totient is φ = 95266752000.

The previous prime is 131200113113. The next prime is 131200113131. The reversal of 131200113121 is 121311002131.

It is a happy number.

131200113121 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 131200113121 - 2³ = 131200113113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131200113095 and 131200113104.

It is not an unprimeable number, because it can be changed into a prime (131200113101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 854580 + ... + 996346.

It is an arithmetic number, because the mean of its divisors is an integer number (3709076184).

Almost surely, 2^131200113121 is an apocalyptic number.

131200113121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131200113121 is a deficient number, since it is larger than the sum of its proper divisors (46835543711).

131200113121 is a wasteful number, since it uses less digits than its factorization.

131200113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141910 (or 141903 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 131200113121 its reverse (121311002131), we get a palindrome (252511115252).

The spelling of 131200113121 in words is "one hundred thirty-one billion, two hundred million, one hundred thirteen thousand, one hundred twenty-one".