130415221 has 24 divisors (see below), whose sum is σ = 145938240. Its totient is φ = 116290944.

The previous prime is 130415209. The next prime is 130415237. The reversal of 130415221 is 122514031.

It is not a de Polignac number, because 130415221 - 2⁷ = 130415093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130415251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 938170 + ... + 938308.

It is an arithmetic number, because the mean of its divisors is an integer number (6080760).

Almost surely, 2^130415221 is an apocalyptic number.

It is an amenable number.

130415221 is a deficient number, since it is larger than the sum of its proper divisors (15523019).

130415221 is a wasteful number, since it uses less digits than its factorization.

130415221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 130415221 is about 11419.9483799184. The cubic root of 130415221 is about 507.1184685299.

Adding to 130415221 its reverse (122514031), we get a palindrome (252929252).

The spelling of 130415221 in words is "one hundred thirty million, four hundred fifteen thousand, two hundred twenty-one".