12844244821 has 16 divisors (see below), whose sum is σ = 14293238400. Its totient is φ = 11479868928.

The previous prime is 12844244789. The next prime is 12844244827.

12844244821 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12844244821 - 2⁵ = 12844244789 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 (12844244827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63816 + ... + 172513.

It is an arithmetic number, because the mean of its divisors is an integer number (893327400).

Almost surely, 2^12844244821 is an apocalyptic number.

It is an amenable number.

12844244821 is a deficient number, since it is larger than the sum of its proper divisors (1448993579).

12844244821 is a wasteful number, since it uses less digits than its factorization.

12844244821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236508.

The product of its digits is 131072, while the sum is 40.

The spelling of 12844244821 in words is "twelve billion, eight hundred forty-four million, two hundred forty-four thousand, eight hundred twenty-one".