4001033402321 has 4 divisors (see below), whose sum is σ = 4003724078592. Its totient is φ = 3998342726052.

The previous prime is 4001033402309. The next prime is 4001033402329. The reversal of 4001033402321 is 1232043301004.

4001033402321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4001033402321 - 2¹⁰ = 4001033401297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4001033402329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1345335905 + ... + 1345338878.

It is an arithmetic number, because the mean of its divisors is an integer number (1000931019648).

Almost surely, 2^{4001033402321} is an apocalyptic number.

It is an amenable number.

4001033402321 is a deficient number, since it is larger than the sum of its proper divisors (2690676271).

4001033402321 is a wasteful number, since it uses less digits than its factorization.

4001033402321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690676270.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 4001033402321 its reverse (1232043301004), we get a palindrome (5233076703325).

The spelling of 4001033402321 in words is "four trillion, one billion, thirty-three million, four hundred two thousand, three hundred twenty-one".