130030021 has 8 divisors (see below), whose sum is σ = 142257024. Its totient is φ = 117870720.

The previous prime is 130030013. The next prime is 130030031. The reversal of 130030021 is 120030031.

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

It is not a de Polignac number, because 130030021 - 2³ = 130030013 is a prime.

It is a super-2 number, since 2×130030021² = 33815612722520882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130030001) 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, 12861 + ... + 20626.

It is an arithmetic number, because the mean of its divisors is an integer number (17782128).

Almost surely, 2^130030021 is an apocalyptic number.

130030021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

130030021 is a deficient number, since it is larger than the sum of its proper divisors (12227003).

130030021 is a wasteful number, since it uses less digits than its factorization.

130030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33851.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 130030021 is about 11403.0706829345. The cubic root of 130030021 is about 506.6186938555.

Adding to 130030021 its sum of digits (10), we get a palindrome (130030031).

Adding to 130030021 its reverse (120030031), we get a palindrome (250060052).

The spelling of 130030021 in words is "one hundred thirty million, thirty thousand, twenty-one".