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BaseRepresentation
bin110101111111001101
3102020100010
4311333031
524034013
64423433
71610463
oct657715
9366303
10221133
11141160
12a7b79
1379863
145a833
15457c3
hex35fcd

221133 has 8 divisors (see below), whose sum is σ = 321696. Its totient is φ = 134000.

The previous prime is 221101. The next prime is 221159. The reversal of 221133 is 331122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221133 - 25 = 221101 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221173) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 3318 + ... + 3383.

It is an arithmetic number, because the mean of its divisors is an integer number (40212).

2221133 is an apocalyptic number.

It is an amenable number.

221133 is a deficient number, since it is larger than the sum of its proper divisors (100563).

221133 is a wasteful number, since it uses less digits than its factorization.

221133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6715.

The product of its digits is 36, while the sum is 12.

The square root of 221133 is about 470.2478070124. The cubic root of 221133 is about 60.4715618914.

Adding to 221133 its reverse (331122), we get a palindrome (552255).

The spelling of 221133 in words is "two hundred twenty-one thousand, one hundred thirty-three".

Divisors: 1 3 11 33 6701 20103 73711 221133