4224422240221 has 4 divisors (see below), whose sum is σ = 4224466921312. Its totient is φ = 4224377559132.

The previous prime is 4224422240131. The next prime is 4224422240323. The reversal of 4224422240221 is 1220422244224.

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 a cyclic number.

It is not a de Polignac number, because 4224422240221 - 2³¹ = 4222274756573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4234422240221) 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, 22198425 + ... + 22387918.

It is an arithmetic number, because the mean of its divisors is an integer number (1056116730328).

Almost surely, 2^{4224422240221} is an apocalyptic number.

It is an amenable number.

4224422240221 is a deficient number, since it is larger than the sum of its proper divisors (44681091).

4224422240221 is an equidigital number, since it uses as much as digits as its factorization.

4224422240221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44681090.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 4224422240221 its reverse (1220422244224), we get a palindrome (5444844484445).

The spelling of 4224422240221 in words is "four trillion, two hundred twenty-four billion, four hundred twenty-two million, two hundred forty thousand, two hundred twenty-one".