130423221 has 12 divisors (see below), whose sum is σ = 188734572. Its totient is φ = 86789376.

The previous prime is 130423213. The next prime is 130423229. The reversal of 130423221 is 122324031.

It is an interprime number because it is at equal distance from previous prime (130423213) and next prime (130423229).

It can be written as a sum of positive squares in 2 ways, for example, as 51408900 + 79014321 = 7170^2 + 8889^2 .

It is not a de Polignac number, because 130423221 - 2³ = 130423213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130423194 and 130423203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130423229) 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, 7996 + ... + 18021.

It is an arithmetic number, because the mean of its divisors is an integer number (15727881).

Almost surely, 2^130423221 is an apocalyptic number.

It is an amenable number.

130423221 is a deficient number, since it is larger than the sum of its proper divisors (58311351).

130423221 is a wasteful number, since it uses less digits than its factorization.

130423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26580 (or 26577 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130423221 is about 11420.2986388273. The cubic root of 130423221 is about 507.1288376283.

Adding to 130423221 its reverse (122324031), we get a palindrome (252747252).

The spelling of 130423221 in words is "one hundred thirty million, four hundred twenty-three thousand, two hundred twenty-one".