130224221 has 4 divisors (see below), whose sum is σ = 130388412. Its totient is φ = 130060032.

The previous prime is 130224209. The next prime is 130224257. The reversal of 130224221 is 122422031.

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 27931225 + 102292996 = 5285^2 + 10114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130224221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130224221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130224821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80900 + ... + 82493.

It is an arithmetic number, because the mean of its divisors is an integer number (32597103).

Almost surely, 2^130224221 is an apocalyptic number.

It is an amenable number.

130224221 is a deficient number, since it is larger than the sum of its proper divisors (164191).

130224221 is an equidigital number, since it uses as much as digits as its factorization.

130224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164190.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 130224221 is about 11411.5827561298. The cubic root of 130224221 is about 506.8707802856.

Adding to 130224221 its reverse (122422031), we get a palindrome (252646252).

The spelling of 130224221 in words is "one hundred thirty million, two hundred twenty-four thousand, two hundred twenty-one".