2432216221 has 4 divisors (see below), whose sum is σ = 2432567932. Its totient is φ = 2431864512.

The previous prime is 2432216179. The next prime is 2432216287. The reversal of 2432216221 is 1226122342.

2432216221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1226122342 = 2 ⋅613061171.

It can be written as a sum of positive squares in 2 ways, for example, as 2382513721 + 49702500 = 48811^2 + 7050^2 .

It is a cyclic number.

It is not a de Polignac number, because 2432216221 - 2¹¹ = 2432214173 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 (2432216821) 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, 165270 + ... + 179383.

It is an arithmetic number, because the mean of its divisors is an integer number (608141983).

Almost surely, 2^2432216221 is an apocalyptic number.

It is an amenable number.

2432216221 is a deficient number, since it is larger than the sum of its proper divisors (351711).

2432216221 is an equidigital number, since it uses as much as digits as its factorization.

2432216221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351710.

The product of its digits is 2304, while the sum is 25.

The square root of 2432216221 is about 49317.5042048967. The cubic root of 2432216221 is about 1344.8300151397.

Adding to 2432216221 its reverse (1226122342), we get a palindrome (3658338563).

The spelling of 2432216221 in words is "two billion, four hundred thirty-two million, two hundred sixteen thousand, two hundred twenty-one".