1021000103 has 2 divisors, whose sum is σ = 1021000104. Its totient is φ = 1021000102.

The previous prime is 1021000073. The next prime is 1021000121. The reversal of 1021000103 is 3010001201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021000103 - 2⁶ = 1021000039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021030103) 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, 510500051 + 510500052.

It is an arithmetic number, because the mean of its divisors is an integer number (510500052).

Almost surely, 2^1021000103 is an apocalyptic number.

1021000103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021000103 is an equidigital number, since it uses as much as digits as its factorization.

1021000103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 1021000103 is about 31953.0922290785. The cubic root of 1021000103 is about 1006.9515976455.

Adding to 1021000103 its reverse (3010001201), we get a palindrome (4031001304).

The spelling of 1021000103 in words is "one billion, twenty-one million, one hundred three", and thus it is an aban number.