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2201 = 3171

2201 has 4 divisors (see below), whose sum is σ = 2304. Its totient is φ = 2100.

The previous prime is 2179. The next prime is 2203. The reversal of 2201 is 1022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2201 - 26 = 2137 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12, base 15 and base 16.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5 + ... + 66.

It is an arithmetic number, because the mean of its divisors is an integer number (576).

It is an amenable number.

2201 is a deficient number, since it is larger than the sum of its proper divisors (103).

2201 is an equidigital number, since it uses as much as digits as its factorization.

2201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102.

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 2201 is about 46.9148164230. The cubic root of 2201 is about 13.0078847631.

Adding to 2201 its reverse (1022), we get a palindrome (3223).

Multiplying 2201 by its reverse (1022), we get a palindrome (2249422).

The spelling of 2201 in words is "two thousand, two hundred one", and thus it is an iban number.

Divisors: 1 31 71 2201