2229 has 4 divisors (see below), whose sum is σ = 2976. Its totient is φ = 1484.

The previous prime is 2221. The next prime is 2237. The reversal of 2229 is 9222.

2229 is nontrivially palindromic in base 15.

2229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is an interprime number because it is at equal distance from previous prime (2221) and next prime (2237).

It is a cyclic number.

It is not a de Polignac number, because 2229 - 2³ = 2221 is a prime.

It is a D-number.

2229 is an undulating number in base 15.

It is a plaindrome in base 10 and base 12.

It is a nialpdrome in base 7 and base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369 + ... + 374.

It is an arithmetic number, because the mean of its divisors is an integer number (744).

2²²²⁹ is an apocalyptic number.

It is an amenable number.

2229 is a deficient number, since it is larger than the sum of its proper divisors (747).

2229 is an equidigital number, since it uses as much as digits as its factorization.

2229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746.

The product of its digits is 72, while the sum is 15.

The square root of 2229 is about 47.2122865365. The cubic root of 2229 is about 13.0628123900.

It can be divided in two parts, 222 and 9, that added together give a triangular number (231 = T₂₁).

The spelling of 2229 in words is "two thousand, two hundred twenty-nine".