130103821 has 2 divisors, whose sum is σ = 130103822. Its totient is φ = 130103820.

The previous prime is 130103747. The next prime is 130103851. The reversal of 130103821 is 128301031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67076100 + 63027721 = 8190^2 + 7939^2 .

It is a cyclic number.

It is not a de Polignac number, because 130103821 - 2¹¹ = 130101773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130103851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65051910 + 65051911.

It is an arithmetic number, because the mean of its divisors is an integer number (65051911).

Almost surely, 2^130103821 is an apocalyptic number.

It is an amenable number.

130103821 is a deficient number, since it is larger than the sum of its proper divisors (1).

130103821 is an equidigital number, since it uses as much as digits as its factorization.

130103821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 130103821 is about 11406.3061943821. The cubic root of 130103821 is about 506.7145214399.

Adding to 130103821 its reverse (128301031), we get a palindrome (258404852).

The spelling of 130103821 in words is "one hundred thirty million, one hundred three thousand, eight hundred twenty-one".