221167 has 4 divisors (see below), whose sum is σ = 224536. Its totient is φ = 217800.

The previous prime is 221159. The next prime is 221171. The reversal of 221167 is 761122.

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 221167 - 2³ = 221159 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 (221197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1584 + ... + 1717.

It is an arithmetic number, because the mean of its divisors is an integer number (56134).

2²²¹¹⁶⁷ is an apocalyptic number.

221167 is a deficient number, since it is larger than the sum of its proper divisors (3369).

221167 is an equidigital number, since it uses as much as digits as its factorization.

221167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368.

The product of its digits is 168, while the sum is 19.

The square root of 221167 is about 470.2839567751. The cubic root of 221167 is about 60.4746609732.

Adding to 221167 its reverse (761122), we get a palindrome (982289).

It can be divided in two parts, 2211 and 67, that added together give a triangular number (2278 = T₆₇).

The spelling of 221167 in words is "two hundred twenty-one thousand, one hundred sixty-seven".