222287 has 4 divisors (see below), whose sum is σ = 239400. Its totient is φ = 205176.

The previous prime is 222269. The next prime is 222289. The reversal of 222287 is 782222.

It is a happy number.

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 222287 - 2¹² = 218191 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 (222289) 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, 8537 + ... + 8562.

It is an arithmetic number, because the mean of its divisors is an integer number (59850).

2²²²²⁸⁷ is an apocalyptic number.

222287 is a deficient number, since it is larger than the sum of its proper divisors (17113).

222287 is a wasteful number, since it uses less digits than its factorization.

222287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17112.

The product of its digits is 896, while the sum is 23.

The square root of 222287 is about 471.4732229936. The cubic root of 222287 is about 60.5765713077.

The spelling of 222287 in words is "two hundred twenty-two thousand, two hundred eighty-seven".