130666021 has 8 divisors (see below), whose sum is σ = 137958080. Its totient is φ = 123415488.

The previous prime is 130666009. The next prime is 130666033. The reversal of 130666021 is 120666031.

It is an interprime number because it is at equal distance from previous prime (130666009) and next prime (130666033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130666021 - 2¹³ = 130657829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130666091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3801 + ... + 16606.

It is an arithmetic number, because the mean of its divisors is an integer number (17244760).

Almost surely, 2^130666021 is an apocalyptic number.

It is an amenable number.

130666021 is a deficient number, since it is larger than the sum of its proper divisors (7292059).

130666021 is a wasteful number, since it uses less digits than its factorization.

130666021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20763.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 130666021 is about 11430.9238909198. The cubic root of 130666021 is about 507.4433382509.

The spelling of 130666021 in words is "one hundred thirty million, six hundred sixty-six thousand, twenty-one".