21303001000103 has 2 divisors, whose sum is σ = 21303001000104. Its totient is φ = 21303001000102.

The previous prime is 21303001000091. The next prime is 21303001000121. The reversal of 21303001000103 is 30100010030312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21303001000103 is a prime.

It is a super-2 number, since 2×21303001000103² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21303001000123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651500500051 + 10651500500052.

It is an arithmetic number, because the mean of its divisors is an integer number (10651500500052).

Almost surely, 2^{21303001000103} is an apocalyptic number.

21303001000103 is a deficient number, since it is larger than the sum of its proper divisors (1).

21303001000103 is an equidigital number, since it uses as much as digits as its factorization.

21303001000103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21303001000103 its reverse (30100010030312), we get a palindrome (51403011030415).

The spelling of 21303001000103 in words is "twenty-one trillion, three hundred three billion, one million, one hundred three", and thus it is an aban number.