224204121 has 24 divisors (see below), whose sum is σ = 335073024. Its totient is φ = 144312480.

The previous prime is 224204111. The next prime is 224204179. The reversal of 224204121 is 121402422.

It is not a de Polignac number, because 224204121 - 2¹⁷ = 224073049 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 224204094 and 224204103.

It is not an unprimeable number, because it can be changed into a prime (224204111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188290 + ... + 189476.

It is an arithmetic number, because the mean of its divisors is an integer number (13961376).

Almost surely, 2^224204121 is an apocalyptic number.

It is an amenable number.

224204121 is a deficient number, since it is larger than the sum of its proper divisors (110868903).

224204121 is a wasteful number, since it uses less digits than its factorization.

224204121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 224204121 is about 14973.4471982907. The cubic root of 224204121 is about 607.5022120531.

Adding to 224204121 its reverse (121402422), we get a palindrome (345606543).

The spelling of 224204121 in words is "two hundred twenty-four million, two hundred four thousand, one hundred twenty-one".