224121 has 4 divisors (see below), whose sum is σ = 298832. Its totient is φ = 149412.

The previous prime is 224113. The next prime is 224129. The reversal of 224121 is 121422.

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 (224113) and next prime (224129).

It is not a de Polignac number, because 224121 - 2³ = 224113 is a prime.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224097 and 224106.

It is not an unprimeable number, because it can be changed into a prime (224129) 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, 37351 + ... + 37356.

It is an arithmetic number, because the mean of its divisors is an integer number (74708).

2²²⁴¹²¹ is an apocalyptic number.

It is an amenable number.

224121 is a deficient number, since it is larger than the sum of its proper divisors (74711).

224121 is an equidigital number, since it uses as much as digits as its factorization.

224121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74710.

The product of its digits is 32, while the sum is 12.

The square root of 224121 is about 473.4141949710. The cubic root of 224121 is about 60.7427128044.

Adding to 224121 its reverse (121422), we get a palindrome (345543).

The spelling of 224121 in words is "two hundred twenty-four thousand, one hundred twenty-one", and thus it is an iban number.