130333221 has 12 divisors (see below), whose sum is σ = 194751180. Its totient is φ = 83892480.

The previous prime is 130333193. The next prime is 130333241. The reversal of 130333221 is 122333031.

It can be written as a sum of positive squares in 2 ways, for example, as 33802596 + 96530625 = 5814^2 + 9825^2 .

It is not a de Polignac number, because 130333221 - 2²⁵ = 96778789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130333194 and 130333203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130333241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249420 + ... + 249941.

It is an arithmetic number, because the mean of its divisors is an integer number (16229265).

Almost surely, 2^130333221 is an apocalyptic number.

It is an amenable number.

130333221 is a deficient number, since it is larger than the sum of its proper divisors (64417959).

130333221 is a wasteful number, since it uses less digits than its factorization.

130333221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499396 (or 499393 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 130333221 is about 11416.3576065223. The cubic root of 130333221 is about 507.0121608138.

Adding to 130333221 its reverse (122333031), we get a palindrome (252666252).

The spelling of 130333221 in words is "one hundred thirty million, three hundred thirty-three thousand, two hundred twenty-one".