221259 has 8 divisors (see below), whose sum is σ = 297792. Its totient is φ = 146120.

The previous prime is 221251. The next prime is 221261. The reversal of 221259 is 952122.

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 221259 - 2³ = 221251 is a prime.

221259 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (221251) 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, 112 + ... + 674.

It is an arithmetic number, because the mean of its divisors is an integer number (37224).

2²²¹²⁵⁹ is an apocalyptic number.

221259 is a deficient number, since it is larger than the sum of its proper divisors (76533).

221259 is a wasteful number, since it uses less digits than its factorization.

221259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697.

The product of its digits is 360, while the sum is 21.

The square root of 221259 is about 470.3817598504. The cubic root of 221259 is about 60.4830451317.

The spelling of 221259 in words is "two hundred twenty-one thousand, two hundred fifty-nine".