2443202221 has 4 divisors (see below), whose sum is σ = 2467392444. Its totient is φ = 2419012000.

The previous prime is 2443202189. The next prime is 2443202231. The reversal of 2443202221 is 1222023442.

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 1871514121 + 571688100 = 43261^2 + 23910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2443202221 - 2⁵ = 2443202189 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2443202192 and 2443202201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443202231) 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, 12094960 + ... + 12095161.

It is an arithmetic number, because the mean of its divisors is an integer number (616848111).

Almost surely, 2^2443202221 is an apocalyptic number.

It is an amenable number.

2443202221 is a deficient number, since it is larger than the sum of its proper divisors (24190223).

2443202221 is a wasteful number, since it uses less digits than its factorization.

2443202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24190222.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 2443202221 is about 49428.7590477447. The cubic root of 2443202221 is about 1346.8517807960.

Adding to 2443202221 its reverse (1222023442), we get a palindrome (3665225663).

The spelling of 2443202221 in words is "two billion, four hundred forty-three million, two hundred two thousand, two hundred twenty-one".