4223044432021 has 4 divisors (see below), whose sum is σ = 4231150084044. Its totient is φ = 4214938780000.

The previous prime is 4223044432003. The next prime is 4223044432031. The reversal of 4223044432021 is 1202344403224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3064652878225 + 1158391553796 = 1750615^2 + 1076286^2 .

It is a cyclic number.

It is not a de Polignac number, because 4223044432021 - 2⁹ = 4223044431509 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 (4223044432031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4052825230 + ... + 4052826271.

It is an arithmetic number, because the mean of its divisors is an integer number (1057787521011).

Almost surely, 2^{4223044432021} is an apocalyptic number.

It is an amenable number.

4223044432021 is a deficient number, since it is larger than the sum of its proper divisors (8105652023).

4223044432021 is an equidigital number, since it uses as much as digits as its factorization.

4223044432021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8105652022.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 4223044432021 its reverse (1202344403224), we get a palindrome (5425388835245).

The spelling of 4223044432021 in words is "four trillion, two hundred twenty-three billion, forty-four million, four hundred thirty-two thousand, twenty-one".