130981221 has 48 divisors (see below), whose sum is σ = 225074304. Its totient is φ = 71839872.

The previous prime is 130981219. The next prime is 130981237. The reversal of 130981221 is 122189031.

It is not a de Polignac number, because 130981221 - 2¹ = 130981219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130981261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 193135 + ... + 193811.

It is an arithmetic number, because the mean of its divisors is an integer number (4689048).

Almost surely, 2^130981221 is an apocalyptic number.

It is an amenable number.

130981221 is a deficient number, since it is larger than the sum of its proper divisors (94093083).

130981221 is a wasteful number, since it uses less digits than its factorization.

130981221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 807 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 130981221 is about 11444.7027484334. The cubic root of 130981221 is about 507.8510384846.

The spelling of 130981221 in words is "one hundred thirty million, nine hundred eighty-one thousand, two hundred twenty-one".