242220321321 has 32 divisors (see below), whose sum is σ = 353433991680. Its totient is φ = 146336784000.

The previous prime is 242220321311. The next prime is 242220321341. The reversal of 242220321321 is 123123022242.

It is not a de Polignac number, because 242220321321 - 2⁷ = 242220321193 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 242220321291 and 242220321300.

It is not an unprimeable number, because it can be changed into a prime (242220321311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20056941 + ... + 20069013.

It is an arithmetic number, because the mean of its divisors is an integer number (11044812240).

Almost surely, 2^242220321321 is an apocalyptic number.

It is an amenable number.

242220321321 is a deficient number, since it is larger than the sum of its proper divisors (111213670359).

242220321321 is a wasteful number, since it uses less digits than its factorization.

242220321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13957.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 242220321321 its reverse (123123022242), we get a palindrome (365343343563).

The spelling of 242220321321 in words is "two hundred forty-two billion, two hundred twenty million, three hundred twenty-one thousand, three hundred twenty-one".