130221321 has 8 divisors (see below), whose sum is σ = 173876160. Its totient is φ = 86690352.

The previous prime is 130221277. The next prime is 130221341. The reversal of 130221321 is 123122031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130221321 - 2⁹ = 130220809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130221321.

It is not an unprimeable number, because it can be changed into a prime (130221341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28485 + ... + 32738.

It is an arithmetic number, because the mean of its divisors is an integer number (21734520).

Almost surely, 2^130221321 is an apocalyptic number.

It is an amenable number.

130221321 is a deficient number, since it is larger than the sum of its proper divisors (43654839).

130221321 is an equidigital number, since it uses as much as digits as its factorization.

130221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61935.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 130221321 is about 11411.4556915408. The cubic root of 130221321 is about 506.8670177081.

Adding to 130221321 its reverse (123122031), we get a palindrome (253343352).

The spelling of 130221321 in words is "one hundred thirty million, two hundred twenty-one thousand, three hundred twenty-one".