130121212131 has 48 divisors (see below), whose sum is σ = 203603047200. Its totient is φ = 82120843008.

The previous prime is 130121212097. The next prime is 130121212153. The reversal of 130121212131 is 131212121031.

130121212131 is a `hidden beast` number, since 1 + 301 + 21 + 212 + 131 = 666.

It is not a de Polignac number, because 130121212131 - 2¹⁷ = 130121081059 is a prime.

It is a super-2 number, since 2×130121212131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130121212531) 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, 15678775 + ... + 15687071.

It is an arithmetic number, because the mean of its divisors is an integer number (4241730150).

Almost surely, 2^130121212131 is an apocalyptic number.

130121212131 is a deficient number, since it is larger than the sum of its proper divisors (73481835069).

130121212131 is a wasteful number, since it uses less digits than its factorization.

130121212131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9953 (or 9928 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 130121212131 its reverse (131212121031), we get a palindrome (261333333162).

The spelling of 130121212131 in words is "one hundred thirty billion, one hundred twenty-one million, two hundred twelve thousand, one hundred thirty-one".