130055221 has 2 divisors, whose sum is σ = 130055222. Its totient is φ = 130055220.

The previous prime is 130055207. The next prime is 130055279. The reversal of 130055221 is 122550031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70980625 + 59074596 = 8425^2 + 7686^2 .

It is a cyclic number.

It is not a de Polignac number, because 130055221 - 2¹¹ = 130053173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130055281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65027610 + 65027611.

It is an arithmetic number, because the mean of its divisors is an integer number (65027611).

Almost surely, 2^130055221 is an apocalyptic number.

It is an amenable number.

130055221 is a deficient number, since it is larger than the sum of its proper divisors (1).

130055221 is an equidigital number, since it uses as much as digits as its factorization.

130055221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 130055221 is about 11404.1755949301. The cubic root of 130055221 is about 506.6514195454.

The spelling of 130055221 in words is "one hundred thirty million, fifty-five thousand, two hundred twenty-one".