4003085221 has 4 divisors (see below), whose sum is σ = 4003212672. Its totient is φ = 4002957772.

The previous prime is 4003085213. The next prime is 4003085231. The reversal of 4003085221 is 1225803004.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4003085221 - 2³ = 4003085213 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 (4003085201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20460 + ... + 91786.

It is an arithmetic number, because the mean of its divisors is an integer number (1000803168).

Almost surely, 2^4003085221 is an apocalyptic number.

It is an amenable number.

4003085221 is a deficient number, since it is larger than the sum of its proper divisors (127451).

4003085221 is an equidigital number, since it uses as much as digits as its factorization.

4003085221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127450.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 4003085221 is about 63269.9393156023. The cubic root of 4003085221 is about 1587.8090706723.

Adding to 4003085221 its reverse (1225803004), we get a palindrome (5228888225).

The spelling of 4003085221 in words is "four billion, three million, eighty-five thousand, two hundred twenty-one".