4032311013221 has 4 divisors (see below), whose sum is σ = 4032674524812. Its totient is φ = 4031947501632.

The previous prime is 4032311013077. The next prime is 4032311013229. The reversal of 4032311013221 is 1223101132304.

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 2995111348321 + 1037199664900 = 1730639^2 + 1018430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4032311013221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4032311013229) 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, 181739156 + ... + 181761341.

It is an arithmetic number, because the mean of its divisors is an integer number (1008168631203).

Almost surely, 2^{4032311013221} is an apocalyptic number.

It is an amenable number.

4032311013221 is a deficient number, since it is larger than the sum of its proper divisors (363511591).

4032311013221 is a wasteful number, since it uses less digits than its factorization.

4032311013221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363511590.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 4032311013221 its reverse (1223101132304), we get a palindrome (5255412145525).

The spelling of 4032311013221 in words is "four trillion, thirty-two billion, three hundred eleven million, thirteen thousand, two hundred twenty-one".