4243224321 has 24 divisors (see below), whose sum is σ = 7006918464. Its totient is φ = 2423927520.

The previous prime is 4243224311. The next prime is 4243224331. The reversal of 4243224321 is 1234223424.

It is an interprime number because it is at equal distance from previous prime (4243224311) and next prime (4243224331).

It is not a de Polignac number, because 4243224321 - 2⁶ = 4243224257 is a prime.

It is a super-2 number, since 2×4243224321² = 36009905276651822082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4243224311) 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, 231910 + ... + 249536.

It is an arithmetic number, because the mean of its divisors is an integer number (291954936).

Almost surely, 2^4243224321 is an apocalyptic number.

It is an amenable number.

4243224321 is a deficient number, since it is larger than the sum of its proper divisors (2763694143).

4243224321 is a wasteful number, since it uses less digits than its factorization.

4243224321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21461 (or 21458 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 4243224321 is about 65140.0362373249. The cubic root of 4243224321 is about 1618.9446361253.

Adding to 4243224321 its reverse (1234223424), we get a palindrome (5477447745).

The spelling of 4243224321 in words is "four billion, two hundred forty-three million, two hundred twenty-four thousand, three hundred twenty-one".