242563244221 has 8 divisors (see below), whose sum is σ = 243532242360. Its totient is φ = 241594441728.

The previous prime is 242563244219. The next prime is 242563244233. The reversal of 242563244221 is 122442365242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52963959321 + 189599284900 = 230139^2 + 435430^2 .

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 242563244221 - 2¹ = 242563244219 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 (242563244281) 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, 2755135 + ... + 2841811.

It is an arithmetic number, because the mean of its divisors is an integer number (30441530295).

Almost surely, 2^242563244221 is an apocalyptic number.

It is an amenable number.

242563244221 is a deficient number, since it is larger than the sum of its proper divisors (968998139).

242563244221 is a wasteful number, since it uses less digits than its factorization.

242563244221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97823.

The product of its digits is 184320, while the sum is 37.

The spelling of 242563244221 in words is "two hundred forty-two billion, five hundred sixty-three million, two hundred forty-four thousand, two hundred twenty-one".