130020032221 has 4 divisors (see below), whose sum is σ = 130482737244. Its totient is φ = 129557327200.

The previous prime is 130020032203. The next prime is 130020032227. The reversal of 130020032221 is 122230020031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86344884025 + 43675148196 = 293845^2 + 208986^2 .

It is a cyclic number.

It is not a de Polignac number, because 130020032221 - 2²³ = 130011643613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130020032195 and 130020032204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130020032227) 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, 231352090 + ... + 231352651.

It is an arithmetic number, because the mean of its divisors is an integer number (32620684311).

Almost surely, 2^130020032221 is an apocalyptic number.

It is an amenable number.

130020032221 is a deficient number, since it is larger than the sum of its proper divisors (462705023).

130020032221 is an equidigital number, since it uses as much as digits as its factorization.

130020032221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462705022.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 130020032221 its reverse (122230020031), we get a palindrome (252250052252).

The spelling of 130020032221 in words is "one hundred thirty billion, twenty million, thirty-two thousand, two hundred twenty-one".