130655221 has 2 divisors, whose sum is σ = 130655222. Its totient is φ = 130655220.

The previous prime is 130655219. The next prime is 130655257. The reversal of 130655221 is 122556031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88548100 + 42107121 = 9410^2 + 6489^2 .

It is a cyclic number.

It is not a de Polignac number, because 130655221 - 2¹ = 130655219 is a prime.

Together with 130655219, it forms a pair of twin primes.

It is equal to p_7413154 and since 130655221 and 7413154 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130655201) 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 as a sum of consecutive naturals, namely, 65327610 + 65327611.

It is an arithmetic number, because the mean of its divisors is an integer number (65327611).

Almost surely, 2^130655221 is an apocalyptic number.

It is an amenable number.

130655221 is a deficient number, since it is larger than the sum of its proper divisors (1).

130655221 is an equidigital number, since it uses as much as digits as its factorization.

130655221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 130655221 is about 11430.4514783975. The cubic root of 130655221 is about 507.4293572148.

The spelling of 130655221 in words is "one hundred thirty million, six hundred fifty-five thousand, two hundred twenty-one".