130543522421 has 4 divisors (see below), whose sum is σ = 140585331852. Its totient is φ = 120501712992.

The previous prime is 130543522387. The next prime is 130543522513. The reversal of 130543522421 is 124225345031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40366435396 + 90177087025 = 200914^2 + 300295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130543522421 is a prime.

It is a super-2 number, since 2×130543522421² (a number of 23 digits) 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 (130543522621) 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, 5020904696 + ... + 5020904721.

It is an arithmetic number, because the mean of its divisors is an integer number (35146332963).

Almost surely, 2^130543522421 is an apocalyptic number.

It is an amenable number.

130543522421 is a deficient number, since it is larger than the sum of its proper divisors (10041809431).

130543522421 is a wasteful number, since it uses less digits than its factorization.

130543522421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10041809430.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 130543522421 its reverse (124225345031), we get a palindrome (254768867452).

The spelling of 130543522421 in words is "one hundred thirty billion, five hundred forty-three million, five hundred twenty-two thousand, four hundred twenty-one".