10003120321 has 4 divisors (see below), whose sum is σ = 10008156592. Its totient is φ = 9998084052.

The previous prime is 10003120313. The next prime is 10003120373. The reversal of 10003120321 is 12302130001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10003120321 - 2³ = 10003120313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10003120921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515155 + ... + 2519128.

It is an arithmetic number, because the mean of its divisors is an integer number (2502039148).

Almost surely, 2^10003120321 is an apocalyptic number.

It is an amenable number.

10003120321 is a deficient number, since it is larger than the sum of its proper divisors (5036271).

10003120321 is an equidigital number, since it uses as much as digits as its factorization.

10003120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036270.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 10003120321 its reverse (12302130001), we get a palindrome (22305250322).

The spelling of 10003120321 in words is "ten billion, three million, one hundred twenty thousand, three hundred twenty-one".