242331112403221 has 4 divisors (see below), whose sum is σ = 242338538388492. Its totient is φ = 242323686417952.

The previous prime is 242331112403203. The next prime is 242331112403231. The reversal of 242331112403221 is 122304211133242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181547867560900 + 60783244842321 = 13473970^2 + 7796361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242331112403221 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 (242331112403231) 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, 3712943686 + ... + 3713008951.

It is an arithmetic number, because the mean of its divisors is an integer number (60584634597123).

Almost surely, 2^{242331112403221} is an apocalyptic number.

It is an amenable number.

242331112403221 is a deficient number, since it is larger than the sum of its proper divisors (7425985271).

242331112403221 is an equidigital number, since it uses as much as digits as its factorization.

242331112403221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7425985270.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 242331112403221 its reverse (122304211133242), we get a palindrome (364635323536463).

The spelling of 242331112403221 in words is "two hundred forty-two trillion, three hundred thirty-one billion, one hundred twelve million, four hundred three thousand, two hundred twenty-one".