4043431412221 has 16 divisors (see below), whose sum is σ = 4066338447360. Its totient is φ = 4020570604800.

The previous prime is 4043431412219. The next prime is 4043431412231. The reversal of 4043431412221 is 1222141343404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4043431412221 - 2¹ = 4043431412219 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 (4043431412231) 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, 1220472661 + ... + 1220475973.

It is an arithmetic number, because the mean of its divisors is an integer number (254146152960).

Almost surely, 2^{4043431412221} is an apocalyptic number.

It is an amenable number.

4043431412221 is a deficient number, since it is larger than the sum of its proper divisors (22907035139).

4043431412221 is a wasteful number, since it uses less digits than its factorization.

4043431412221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8316.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 4043431412221 its reverse (1222141343404), we get a palindrome (5265572755625).

The spelling of 4043431412221 in words is "four trillion, forty-three billion, four hundred thirty-one million, four hundred twelve thousand, two hundred twenty-one".