10003232221 has 4 divisors (see below), whose sum is σ = 10069478944. Its totient is φ = 9936985500.

The previous prime is 10003232209. The next prime is 10003232269. The reversal of 10003232221 is 12223230001.

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 10003232221 - 2⁷ = 10003232093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10003232195 and 10003232204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10003232321) 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 in 3 ways as a sum of consecutive naturals, for example, 33123135 + ... + 33123436.

It is an arithmetic number, because the mean of its divisors is an integer number (2517369736).

Almost surely, 2^10003232221 is an apocalyptic number.

It is an amenable number.

10003232221 is a deficient number, since it is larger than the sum of its proper divisors (66246723).

10003232221 is an equidigital number, since it uses as much as digits as its factorization.

10003232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66246722.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 10003232221 its reverse (12223230001), we get a palindrome (22226462222).

The spelling of 10003232221 in words is "ten billion, three million, two hundred thirty-two thousand, two hundred twenty-one".