130303310021 has 4 divisors (see below), whose sum is σ = 131646643212. Its totient is φ = 128959976832.

The previous prime is 130303310017. The next prime is 130303310029. The reversal of 130303310021 is 120013303031.

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 82216960225 + 48086349796 = 286735^2 + 219286^2 .

It is a cyclic number.

It is not a de Polignac number, because 130303310021 - 2² = 130303310017 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 (130303310029) 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, 671666450 + ... + 671666643.

It is an arithmetic number, because the mean of its divisors is an integer number (32911660803).

Almost surely, 2^130303310021 is an apocalyptic number.

It is an amenable number.

130303310021 is a deficient number, since it is larger than the sum of its proper divisors (1343333191).

130303310021 is an equidigital number, since it uses as much as digits as its factorization.

130303310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343333190.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 130303310021 its reverse (120013303031), we get a palindrome (250316613052).

The spelling of 130303310021 in words is "one hundred thirty billion, three hundred three million, three hundred ten thousand, twenty-one".