2238842221 has 8 divisors (see below), whose sum is σ = 2791283904. Its totient is φ = 1744552320.

The previous prime is 2238842209. The next prime is 2238842237. The reversal of 2238842221 is 1222488322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2238842221 - 2⁵ = 2238842189 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 (2238842201) 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, 14537860 + ... + 14538013.

It is an arithmetic number, because the mean of its divisors is an integer number (348910488).

Almost surely, 2^2238842221 is an apocalyptic number.

It is an amenable number.

2238842221 is a deficient number, since it is larger than the sum of its proper divisors (552441683).

2238842221 is a wasteful number, since it uses less digits than its factorization.

2238842221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29075891.

The product of its digits is 24576, while the sum is 34.

The square root of 2238842221 is about 47316.4054108086. The cubic root of 2238842221 is about 1308.2010583281.

The spelling of 2238842221 in words is "two billion, two hundred thirty-eight million, eight hundred forty-two thousand, two hundred twenty-one".