4043321121 has 8 divisors (see below), whose sum is σ = 6161251264. Its totient is φ = 2310469200.

The previous prime is 4043321077. The next prime is 4043321137. The reversal of 4043321121 is 1211233404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4043321121 - 2¹⁰ = 4043320097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 192539101 = 4043321121 / (4 + 0 + 4 + 3 + 3 + 2 + 1 + 1 + 2 + 1).

It is not an unprimeable number, because it can be changed into a prime (4043321221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96269530 + ... + 96269571.

It is an arithmetic number, because the mean of its divisors is an integer number (770156408).

Almost surely, 2^4043321121 is an apocalyptic number.

It is an amenable number.

4043321121 is a deficient number, since it is larger than the sum of its proper divisors (2117930143).

4043321121 is a wasteful number, since it uses less digits than its factorization.

4043321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192539111.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4043321121 is about 63587.1144258017. The cubic root of 4043321121 is about 1593.1111534014. Note that the first 4 decimals are identical.

Adding to 4043321121 its reverse (1211233404), we get a palindrome (5254554525).

The spelling of 4043321121 in words is "four billion, forty-three million, three hundred twenty-one thousand, one hundred twenty-one".