36003221 has 4 divisors (see below), whose sum is σ = 36053472. Its totient is φ = 35952972.

The previous prime is 36003217. The next prime is 36003241. The reversal of 36003221 is 12230063.

36003221 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 36003221 - 2² = 36003217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36003221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36003241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24035 + ... + 25488.

It is an arithmetic number, because the mean of its divisors is an integer number (9013368).

Almost surely, 2^36003221 is an apocalyptic number.

It is an amenable number.

36003221 is a deficient number, since it is larger than the sum of its proper divisors (50251).

36003221 is an equidigital number, since it uses as much as digits as its factorization.

36003221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50250.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 36003221 is about 6000.2684106630. The cubic root of 36003221 is about 330.2025722881.

Adding to 36003221 its reverse (12230063), we get a palindrome (48233284).

The spelling of 36003221 in words is "thirty-six million, three thousand, two hundred twenty-one".