130312121 has 4 divisors (see below), whose sum is σ = 130857600. Its totient is φ = 129766644.

The previous prime is 130312111. The next prime is 130312129. The reversal of 130312121 is 121213031.

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.

It is a cyclic number.

It is not a de Polignac number, because 130312121 - 2¹⁸ = 130049977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130312096 and 130312105.

It is not an unprimeable number, because it can be changed into a prime (130312129) 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, 272381 + ... + 272858.

It is an arithmetic number, because the mean of its divisors is an integer number (32714400).

Almost surely, 2^130312121 is an apocalyptic number.

It is an amenable number.

130312121 is a deficient number, since it is larger than the sum of its proper divisors (545479).

130312121 is an equidigital number, since it uses as much as digits as its factorization.

130312121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545478.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 130312121 is about 11415.4334565097. The cubic root of 130312121 is about 506.9847988108.

Adding to 130312121 its reverse (121213031), we get a palindrome (251525152).

The spelling of 130312121 in words is "one hundred thirty million, three hundred twelve thousand, one hundred twenty-one".