130135221 has 16 divisors (see below), whose sum is σ = 204134400. Its totient is φ = 81653184.

The previous prime is 130135183. The next prime is 130135231. The reversal of 130135221 is 122531031.

130135221 is a `hidden beast` number, since 130 + 13 + 522 + 1 = 666.

It is not a de Polignac number, because 130135221 - 2¹⁰ = 130134197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130135194 and 130135203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130135231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141301 + ... + 142218.

It is an arithmetic number, because the mean of its divisors is an integer number (12758400).

Almost surely, 2^130135221 is an apocalyptic number.

It is an amenable number.

130135221 is a deficient number, since it is larger than the sum of its proper divisors (73999179).

130135221 is a wasteful number, since it uses less digits than its factorization.

130135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283545 (or 283539 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 130135221 is about 11407.6825429182. The cubic root of 130135221 is about 506.7552826207.

Adding to 130135221 its reverse (122531031), we get a palindrome (252666252).

The spelling of 130135221 in words is "one hundred thirty million, one hundred thirty-five thousand, two hundred twenty-one".