21130103303 has 2 divisors, whose sum is σ = 21130103304. Its totient is φ = 21130103302.

The previous prime is 21130103287. The next prime is 21130103311. The reversal of 21130103303 is 30330103112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21130103303 - 2⁴ = 21130103287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21130103363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10565051651 + 10565051652.

It is an arithmetic number, because the mean of its divisors is an integer number (10565051652).

Almost surely, 2^21130103303 is an apocalyptic number.

21130103303 is a deficient number, since it is larger than the sum of its proper divisors (1).

21130103303 is an equidigital number, since it uses as much as digits as its factorization.

21130103303 is an odious number, because the sum of its binary digits is odd.

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

Adding to 21130103303 its reverse (30330103112), we get a palindrome (51460206415).

The spelling of 21130103303 in words is "twenty-one billion, one hundred thirty million, one hundred three thousand, three hundred three".