10021003 has 2 divisors, whose sum is σ = 10021004. Its totient is φ = 10021002.

The previous prime is 10021001. The next prime is 10021027. The reversal of 10021003 is 30012001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10021003 - 2¹ = 10021001 is a prime.

It is a super-2 number, since 2×10021003² = 200841002252018, which contains 22 as substring.

Together with 10021001, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10021001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010501 + 5010502.

It is an arithmetic number, because the mean of its divisors is an integer number (5010502).

Almost surely, 2^10021003 is an apocalyptic number.

10021003 is a deficient number, since it is larger than the sum of its proper divisors (1).

10021003 is an equidigital number, since it uses as much as digits as its factorization.

10021003 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 7.

The square root of 10021003 is about 3165.5967841783. The cubic root of 10021003 is about 215.5941955014.

Adding to 10021003 its reverse (30012001), we get a palindrome (40033004).

The spelling of 10021003 in words is "ten million, twenty-one thousand, three".