4224042221 has 8 divisors (see below), whose sum is σ = 4828503360. Its totient is φ = 3619837728.

The previous prime is 4224042191. The next prime is 4224042223. The reversal of 4224042221 is 1222404224.

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 4224042221 - 2²⁶ = 4156933357 is a prime.

It is a super-2 number, since 2×4224042221² = 35685065369581225682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4224042223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27491 + ... + 95936.

It is an arithmetic number, because the mean of its divisors is an integer number (603562920).

Almost surely, 2^4224042221 is an apocalyptic number.

It is an amenable number.

4224042221 is a deficient number, since it is larger than the sum of its proper divisors (604461139).

4224042221 is a wasteful number, since it uses less digits than its factorization.

4224042221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128323.

The product of its (nonzero) digits is 2048, while the sum is 23.

The square root of 4224042221 is about 64992.6320516411. The cubic root of 4224042221 is about 1616.5013941272.

Adding to 4224042221 its reverse (1222404224), we get a palindrome (5446446445).

The spelling of 4224042221 in words is "four billion, two hundred twenty-four million, forty-two thousand, two hundred twenty-one".