130000020321 has 4 divisors (see below), whose sum is σ = 173333360432. Its totient is φ = 86666680212.

The previous prime is 130000020247. The next prime is 130000020329. The reversal of 130000020321 is 123020000031.

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.

It is not a de Polignac number, because 130000020321 - 2³⁴ = 112820151137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130000020297 and 130000020306.

It is not an unprimeable number, because it can be changed into a prime (130000020329) 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, 21666670051 + ... + 21666670056.

It is an arithmetic number, because the mean of its divisors is an integer number (43333340108).

Almost surely, 2^130000020321 is an apocalyptic number.

It is an amenable number.

130000020321 is a deficient number, since it is larger than the sum of its proper divisors (43333340111).

130000020321 is an equidigital number, since it uses as much as digits as its factorization.

130000020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43333340110.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 130000020321 its reverse (123020000031), we get a palindrome (253020020352).

The spelling of 130000020321 in words is "one hundred thirty billion, twenty thousand, three hundred twenty-one".