242331221 has 8 divisors (see below), whose sum is σ = 273477600. Its totient is φ = 212704240.

The previous prime is 242331169. The next prime is 242331239. The reversal of 242331221 is 122133242.

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 242331221 - 2¹⁰ = 242330197 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 242331193 and 242331202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242331251) 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, 379511 + ... + 380148.

It is an arithmetic number, because the mean of its divisors is an integer number (34184700).

Almost surely, 2^242331221 is an apocalyptic number.

It is an amenable number.

242331221 is a deficient number, since it is larger than the sum of its proper divisors (31146379).

242331221 is a wasteful number, since it uses less digits than its factorization.

242331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759699.

The product of its digits is 576, while the sum is 20.

The square root of 242331221 is about 15566.9913920449. The cubic root of 242331221 is about 623.4521450500.

Adding to 242331221 its reverse (122133242), we get a palindrome (364464463).

The spelling of 242331221 in words is "two hundred forty-two million, three hundred thirty-one thousand, two hundred twenty-one".