159222 has 32 divisors (see below), whose sum is σ = 387072. Its totient is φ = 42624.

The previous prime is 159209. The next prime is 159223. The reversal of 159222 is 222951.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159223) by changing a digit.

159222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (12096).

2¹⁵⁹²²² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193536).

159222 is an abundant number, since it is smaller than the sum of its proper divisors (227850).

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

159222 is a wasteful number, since it uses less digits than its factorization.

159222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252.

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

The square root of 159222 is about 399.0263149217. The cubic root of 159222 is about 54.2002169533.

Subtracting from 159222 its sum of digits (21), we obtain a square (159201 = 399²).

The spelling of 159222 in words is "one hundred fifty-nine thousand, two hundred twenty-two".