2320224721 has 4 divisors (see below), whose sum is σ = 2400232500. Its totient is φ = 2240216944.

The previous prime is 2320224629. The next prime is 2320224763. The reversal of 2320224721 is 1274220232.

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 670240321 + 1649984400 = 25889^2 + 40620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320224721 - 2¹¹ = 2320222673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2320224421) 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, 40003846 + ... + 40003903.

It is an arithmetic number, because the mean of its divisors is an integer number (600058125).

Almost surely, 2^2320224721 is an apocalyptic number.

It is an amenable number.

2320224721 is a deficient number, since it is larger than the sum of its proper divisors (80007779).

2320224721 is an equidigital number, since it uses as much as digits as its factorization.

2320224721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80007778.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 2320224721 is about 48168.7110165925. The cubic root of 2320224721 is about 1323.8639311019.

Adding to 2320224721 its reverse (1274220232), we get a palindrome (3594444953).

The spelling of 2320224721 in words is "two billion, three hundred twenty million, two hundred twenty-four thousand, seven hundred twenty-one".