130163021 has 4 divisors (see below), whose sum is σ = 133190112. Its totient is φ = 127135932.

The previous prime is 130163009. The next prime is 130163083. The reversal of 130163021 is 120361031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130163021 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 (130163221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1513481 + ... + 1513566.

It is an arithmetic number, because the mean of its divisors is an integer number (33297528).

Almost surely, 2^130163021 is an apocalyptic number.

It is an amenable number.

130163021 is a deficient number, since it is larger than the sum of its proper divisors (3027091).

130163021 is an equidigital number, since it uses as much as digits as its factorization.

130163021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027090.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 130163021 is about 11408.9009549562. The cubic root of 130163021 is about 506.7913650733.

The spelling of 130163021 in words is "one hundred thirty million, one hundred sixty-three thousand, twenty-one".