130520305121 has 4 divisors (see below), whose sum is σ = 130536870192. Its totient is φ = 130503740052.

The previous prime is 130520305103. The next prime is 130520305127. The reversal of 130520305121 is 121503025031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121503025031 = 18311 ⋅6635521.

It is a cyclic number.

It is not a de Polignac number, because 130520305121 - 2¹⁰ = 130520304097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130520305127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8270711 + ... + 8286476.

It is an arithmetic number, because the mean of its divisors is an integer number (32634217548).

Almost surely, 2^130520305121 is an apocalyptic number.

It is an amenable number.

130520305121 is a deficient number, since it is larger than the sum of its proper divisors (16565071).

130520305121 is an equidigital number, since it uses as much as digits as its factorization.

130520305121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16565070.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 130520305121 in words is "one hundred thirty billion, five hundred twenty million, three hundred five thousand, one hundred twenty-one".