12804422440821 has 16 divisors (see below), whose sum is σ = 18639968692800. Its totient is φ = 7753858427520.

The previous prime is 12804422440819. The next prime is 12804422440847.

12804422440821 is nontrivially palindromic in base 10.

12804422440821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12804422440821 - 2¹ = 12804422440819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12804422040821) 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, 159899296 + ... + 159979353.

It is an arithmetic number, because the mean of its divisors is an integer number (1164998043300).

Almost surely, 2^{12804422440821} is an apocalyptic number.

12804422440821 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12804422440821 is a deficient number, since it is larger than the sum of its proper divisors (5835546251979).

12804422440821 is a wasteful number, since it uses less digits than its factorization.

12804422440821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319879876.

The product of its (nonzero) digits is 262144, while the sum is 42.

The spelling of 12804422440821 in words is "twelve trillion, eight hundred four billion, four hundred twenty-two million, four hundred forty thousand, eight hundred twenty-one".