221199 has 8 divisors (see below), whose sum is σ = 321792. Its totient is φ = 134040.

The previous prime is 221197. The next prime is 221201. The reversal of 221199 is 991122.

It is an interprime number because it is at equal distance from previous prime (221197) and next prime (221201).

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

It is not a de Polignac number, because 221199 - 2¹ = 221197 is a prime.

221199 is a lucky number.

It is a zygodrome in base 10.

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 7 ways as a sum of consecutive naturals, for example, 3319 + ... + 3384.

It is an arithmetic number, because the mean of its divisors is an integer number (40224).

2²²¹¹⁹⁹ is an apocalyptic number.

221199 is a deficient number, since it is larger than the sum of its proper divisors (100593).

221199 is a wasteful number, since it uses less digits than its factorization.

221199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717.

The product of its digits is 324, while the sum is 24.

The square root of 221199 is about 470.3179775429. The cubic root of 221199 is about 60.4775774659.

It can be divided in two parts, 22 and 1199, that added together give a palindrome (1221).

The spelling of 221199 in words is "two hundred twenty-one thousand, one hundred ninety-nine".