165222 has 24 divisors (see below), whose sum is σ = 365976. Its totient is φ = 53856.

The previous prime is 165211. The next prime is 165229. The reversal of 165222 is 222561.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 165195 and 165204.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 165222.

It is not an unprimeable number, because it can be changed into a prime (165229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1138 + ... + 1274.

It is an arithmetic number, because the mean of its divisors is an integer number (15249).

2¹⁶⁵²²² is an apocalyptic number.

165222 is an abundant number, since it is smaller than the sum of its proper divisors (200754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165222 is a wasteful number, since it uses less digits than its factorization.

165222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 209 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 165222 is about 406.4750914878. The cubic root of 165222 is about 54.8726530269.

Adding to 165222 its reverse (222561), we get a palindrome (387783).

The spelling of 165222 in words is "one hundred sixty-five thousand, two hundred twenty-two".