224121243 has 4 divisors (see below), whose sum is σ = 298828328. Its totient is φ = 149414160.

The previous prime is 224121229. The next prime is 224121257. The reversal of 224121243 is 342121422.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (224121229) and next prime (224121257).

It is not a de Polignac number, because 224121243 - 2⁶ = 224121179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224121263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37353538 + ... + 37353543.

It is an arithmetic number, because the mean of its divisors is an integer number (74707082).

Almost surely, 2^224121243 is an apocalyptic number.

224121243 is a deficient number, since it is larger than the sum of its proper divisors (74707085).

224121243 is an equidigital number, since it uses as much as digits as its factorization.

224121243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74707084.

The product of its digits is 768, while the sum is 21.

The square root of 224121243 is about 14970.6794434989. The cubic root of 224121243 is about 607.4273475751.

Adding to 224121243 its reverse (342121422), we get a palindrome (566242665).

The spelling of 224121243 in words is "two hundred twenty-four million, one hundred twenty-one thousand, two hundred forty-three".