221095 has 8 divisors (see below), whose sum is σ = 303264. Its totient is φ = 151584.

The previous prime is 221093. The next prime is 221101. The reversal of 221095 is 590122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221095 - 2¹ = 221093 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221093) 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 7 ways as a sum of consecutive naturals, for example, 3124 + ... + 3193.

It is an arithmetic number, because the mean of its divisors is an integer number (37908).

2²²¹⁰⁹⁵ is an apocalyptic number.

221095 is a deficient number, since it is larger than the sum of its proper divisors (82169).

221095 is an equidigital number, since it uses as much as digits as its factorization.

221095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 221095 is about 470.2074010477. The cubic root of 221095 is about 60.4680978359.

It can be divided in two parts, 22 and 1095, that multiplied together give a triangular number (24090 = T₂₁₉).

The spelling of 221095 in words is "two hundred twenty-one thousand, ninety-five".