226021 has 8 divisors (see below), whose sum is σ = 244224. Its totient is φ = 208560.

The previous prime is 226013. The next prime is 226027. The reversal of 226021 is 120622.

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 226021 - 2³ = 226013 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 225992 and 226010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555 + ... + 871.

It is an arithmetic number, because the mean of its divisors is an integer number (30528).

2²²⁶⁰²¹ is an apocalyptic number.

It is an amenable number.

226021 is a deficient number, since it is larger than the sum of its proper divisors (18203).

226021 is a wasteful number, since it uses less digits than its factorization.

226021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 226021 is about 475.4166593631. The cubic root of 226021 is about 60.9138800854.

Adding to 226021 its reverse (120622), we get a palindrome (346643).

The spelling of 226021 in words is "two hundred twenty-six thousand, twenty-one".