221035 has 4 divisors (see below), whose sum is σ = 265248. Its totient is φ = 176824.

The previous prime is 221021. The next prime is 221047. The reversal of 221035 is 530122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221035 - 2⁷ = 220907 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

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, 22099 + ... + 22108.

It is an arithmetic number, because the mean of its divisors is an integer number (66312).

2²²¹⁰³⁵ is an apocalyptic number.

221035 is a deficient number, since it is larger than the sum of its proper divisors (44213).

221035 is an equidigital number, since it uses as much as digits as its factorization.

221035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44212.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 221035 is about 470.1435950856. The cubic root of 221035 is about 60.4626274662.

Adding to 221035 its reverse (530122), we get a palindrome (751157).

The spelling of 221035 in words is "two hundred twenty-one thousand, thirty-five".