221195 has 16 divisors (see below), whose sum is σ = 296352. Its totient is φ = 157440.

The previous prime is 221173. The next prime is 221197. The reversal of 221195 is 591122.

It is not a de Polignac number, because 221195 - 2⁸ = 220939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2624 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (18522).

2²²¹¹⁹⁵ is an apocalyptic number.

221195 is a deficient number, since it is larger than the sum of its proper divisors (75157).

221195 is a wasteful number, since it uses less digits than its factorization.

221195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142.

The product of its digits is 180, while the sum is 20.

The square root of 221195 is about 470.3137250815. The cubic root of 221195 is about 60.4772129197.

The spelling of 221195 in words is "two hundred twenty-one thousand, one hundred ninety-five".