229021 has 8 divisors (see below), whose sum is σ = 250880. Its totient is φ = 207792.

The previous prime is 229003. The next prime is 229027. The reversal of 229021 is 120922.

It is a happy number.

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

It is not a de Polignac number, because 229021 - 2⁵ = 228989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228986 and 229004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229027) 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, 916 + ... + 1138.

It is an arithmetic number, because the mean of its divisors is an integer number (31360).

2²²⁹⁰²¹ is an apocalyptic number.

It is an amenable number.

229021 is a deficient number, since it is larger than the sum of its proper divisors (21859).

229021 is a wasteful number, since it uses less digits than its factorization.

229021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 229021 is about 478.5613858221. The cubic root of 229021 is about 61.1822018103.

Adding to 229021 its reverse (120922), we get a palindrome (349943).

The spelling of 229021 in words is "two hundred twenty-nine thousand, twenty-one".