12803230821 has 4 divisors (see below), whose sum is σ = 17070974432. Its totient is φ = 8535487212.

The previous prime is 12803230789. The next prime is 12803230861.

12803230821 is nontrivially palindromic in base 10.

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 12803230821 - 2⁵ = 12803230789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12803230861) 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, 2133871801 + ... + 2133871806.

It is an arithmetic number, because the mean of its divisors is an integer number (4267743608).

Almost surely, 2^12803230821 is an apocalyptic number.

It is an amenable number.

12803230821 is a deficient number, since it is larger than the sum of its proper divisors (4267743611).

12803230821 is an equidigital number, since it uses as much as digits as its factorization.

12803230821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267743610.

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 12803230821 in words is "twelve billion, eight hundred three million, two hundred thirty thousand, eight hundred twenty-one".