221134 has 4 divisors (see below), whose sum is σ = 331704.
Its totient is φ = 110566.
The previous prime is 221101. The next prime is 221159. The reversal of 221134 is 431122.
221134 is nontrivially palindromic in base 12.
It is a semiprime because it is the product of two primes.
It is a congruent number.
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, 55282 + ... + 55285.
It is an arithmetic number, because the mean of its divisors is an integer number (82926).
2221134 is an apocalyptic number.
221134 is a deficient number, since it is larger than the sum of its proper divisors (110570).
221134 is a wasteful number, since it uses less digits than its factorization.
221134 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 110569.
The product of its digits is 48, while the sum is 13.
The square root of 221134 is about 470.2488702804.
The cubic root of 221134 is about 60.4716530454.
Adding to 221134 its reverse (431122), we get a palindrome (652256).
It can be divided in two parts, 22 and 1134, that added together give a square (1156 = 342).
The spelling of 221134 in words is "two hundred twenty-one thousand, one hundred thirty-four".