130309221 has 16 divisors (see below), whose sum is σ = 203185664. Its totient is φ = 72730224.

The previous prime is 130309219. The next prime is 130309247. The reversal of 130309221 is 122903031.

It is a happy number.

It is not a de Polignac number, because 130309221 - 2¹ = 130309219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130309021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71251 + ... + 73056.

It is an arithmetic number, because the mean of its divisors is an integer number (12699104).

Almost surely, 2^130309221 is an apocalyptic number.

It is an amenable number.

130309221 is a deficient number, since it is larger than the sum of its proper divisors (72876443).

130309221 is a wasteful number, since it uses less digits than its factorization.

130309221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144360.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 130309221 is about 11415.3064347831. The cubic root of 130309221 is about 506.9810379255.

The spelling of 130309221 in words is "one hundred thirty million, three hundred nine thousand, two hundred twenty-one".