130667221 has 2 divisors, whose sum is σ = 130667222. Its totient is φ = 130667220.

The previous prime is 130667213. The next prime is 130667267. The reversal of 130667221 is 122766031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113742225 + 16924996 = 10665^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 130667221 - 2³ = 130667213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 130667221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130667521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65333610 + 65333611.

It is an arithmetic number, because the mean of its divisors is an integer number (65333611).

Almost surely, 2^130667221 is an apocalyptic number.

It is an amenable number.

130667221 is a deficient number, since it is larger than the sum of its proper divisors (1).

130667221 is an equidigital number, since it uses as much as digits as its factorization.

130667221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 130667221 is about 11430.9763799948. The cubic root of 130667221 is about 507.4448916517. Note that the first 3 decimals are identical.

The spelling of 130667221 in words is "one hundred thirty million, six hundred sixty-seven thousand, two hundred twenty-one".