10000203321 has 4 divisors (see below), whose sum is σ = 13333604432. Its totient is φ = 6666802212.

The previous prime is 10000203307. The next prime is 10000203341. The reversal of 10000203321 is 12330200001.

It is a happy number.

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 not a de Polignac number, because 10000203321 - 2¹⁰ = 10000202297 is a prime.

It is a super-2 number, since 2×10000203321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10000203297 and 10000203306.

It is not an unprimeable number, because it can be changed into a prime (10000203341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1666700551 + ... + 1666700556.

It is an arithmetic number, because the mean of its divisors is an integer number (3333401108).

Almost surely, 2^10000203321 is an apocalyptic number.

It is an amenable number.

10000203321 is a deficient number, since it is larger than the sum of its proper divisors (3333401111).

10000203321 is an equidigital number, since it uses as much as digits as its factorization.

10000203321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333401110.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 10000203321 its reverse (12330200001), we get a palindrome (22330403322).

The spelling of 10000203321 in words is "ten billion, two hundred three thousand, three hundred twenty-one".