221162 has 4 divisors (see below), whose sum is σ = 331746. Its totient is φ = 110580.

The previous prime is 221159. The next prime is 221171. The reversal of 221162 is 261122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 137641 + 83521 = 371^2 + 289^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55289 + ... + 55292.

2²²¹¹⁶² is an apocalyptic number.

221162 is a deficient number, since it is larger than the sum of its proper divisors (110584).

221162 is a wasteful number, since it uses less digits than its factorization.

221162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110583.

The product of its digits is 48, while the sum is 14.

The square root of 221162 is about 470.2786408078. The cubic root of 221162 is about 60.4742052458.

Adding to 221162 its reverse (261122), we get a palindrome (482284).

It can be divided in two parts, 221 and 162, that added together give a palindrome (383).

The spelling of 221162 in words is "two hundred twenty-one thousand, one hundred sixty-two".