242244221 has 8 divisors (see below), whose sum is σ = 250798080. Its totient is φ = 233703792.

The previous prime is 242244209. The next prime is 242244227. The reversal of 242244221 is 122442242.

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 242244221 - 2¹⁸ = 241982077 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 (242244227) 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, 45716 + ... + 50738.

It is an arithmetic number, because the mean of its divisors is an integer number (31349760).

Almost surely, 2^242244221 is an apocalyptic number.

It is an amenable number.

242244221 is a deficient number, since it is larger than the sum of its proper divisors (8553859).

242244221 is a wasteful number, since it uses less digits than its factorization.

242244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715.

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

The square root of 242244221 is about 15564.1967669392. The cubic root of 242244221 is about 623.3775270283.

Adding to 242244221 its reverse (122442242), we get a palindrome (364686463).

The spelling of 242244221 in words is "two hundred forty-two million, two hundred forty-four thousand, two hundred twenty-one".