130404221 has 8 divisors (see below), whose sum is σ = 134089560. Its totient is φ = 126764352.

The previous prime is 130404203. The next prime is 130404233. The reversal of 130404221 is 122404031.

It can be written as a sum of positive squares in 4 ways, for example, as 13980121 + 116424100 = 3739^2 + 10790^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130404221 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 130404221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130464221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5510 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (16761195).

Almost surely, 2^130404221 is an apocalyptic number.

It is an amenable number.

130404221 is a deficient number, since it is larger than the sum of its proper divisors (3685339).

130404221 is a wasteful number, since it uses less digits than its factorization.

130404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22735.

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

The square root of 130404221 is about 11419.4667563770. The cubic root of 130404221 is about 507.1042103271.

Adding to 130404221 its reverse (122404031), we get a palindrome (252808252).

The spelling of 130404221 in words is "one hundred thirty million, four hundred four thousand, two hundred twenty-one".