242225115521 has 4 divisors (see below), whose sum is σ = 242776881600. Its totient is φ = 241673349444.

The previous prime is 242225115511. The next prime is 242225115523. The reversal of 242225115521 is 125511522242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242225115521 - 2³⁴ = 225045246337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (242225115523) 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, 275882381 + ... + 275883258.

It is an arithmetic number, because the mean of its divisors is an integer number (60694220400).

Almost surely, 2^242225115521 is an apocalyptic number.

It is an amenable number.

242225115521 is a deficient number, since it is larger than the sum of its proper divisors (551766079).

242225115521 is an equidigital number, since it uses as much as digits as its factorization.

242225115521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551766078.

The product of its digits is 16000, while the sum is 32.

Adding to 242225115521 its reverse (125511522242), we get a palindrome (367736637763).

The spelling of 242225115521 in words is "two hundred forty-two billion, two hundred twenty-five million, one hundred fifteen thousand, five hundred twenty-one".