10003121003 has 8 divisors (see below), whose sum is σ = 10588710000. Its totient is φ = 9433575648.

The previous prime is 10003120991. The next prime is 10003121021. The reversal of 10003121003 is 30012130001.

10003121003 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10003121003 - 2⁸ = 10003120747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10003121033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4009628 + ... + 4012121.

It is an arithmetic number, because the mean of its divisors is an integer number (1323588750).

Almost surely, 2^10003121003 is an apocalyptic number.

10003121003 is a deficient number, since it is larger than the sum of its proper divisors (585588997).

10003121003 is an equidigital number, since it uses as much as digits as its factorization.

10003121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8021821.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 10003121003 its reverse (30012130001), we get a palindrome (40015251004).

The spelling of 10003121003 in words is "ten billion, three million, one hundred twenty-one thousand, three".