130522021 has 4 divisors (see below), whose sum is σ = 149168032. Its totient is φ = 111876012.

The previous prime is 130522019. The next prime is 130522027. The reversal of 130522021 is 120225031.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120225031 = 2531 ⋅47501.

It is a cyclic number.

It is not a de Polignac number, because 130522021 - 2¹ = 130522019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130521986 and 130522004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130522027) 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 in 3 ways as a sum of consecutive naturals, for example, 9322995 + ... + 9323008.

It is an arithmetic number, because the mean of its divisors is an integer number (37292008).

Almost surely, 2^130522021 is an apocalyptic number.

It is an amenable number.

130522021 is a deficient number, since it is larger than the sum of its proper divisors (18646011).

130522021 is an equidigital number, since it uses as much as digits as its factorization.

130522021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18646010.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 130522021 is about 11424.6234511252. The cubic root of 130522021 is about 507.2568610539.

Adding to 130522021 its reverse (120225031), we get a palindrome (250747052).

The spelling of 130522021 in words is "one hundred thirty million, five hundred twenty-two thousand, twenty-one".