2221323443 has 2 divisors, whose sum is σ = 2221323444. Its totient is φ = 2221323442.

The previous prime is 2221323407. The next prime is 2221323451. The reversal of 2221323443 is 3443231222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221323443 - 2¹⁸ = 2221061299 is a prime.

It is not a weakly prime, because it can be changed into another prime (2221323473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110661721 + 1110661722.

It is an arithmetic number, because the mean of its divisors is an integer number (1110661722).

Almost surely, 2^2221323443 is an apocalyptic number.

2221323443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221323443 is an equidigital number, since it uses as much as digits as its factorization.

2221323443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 26.

The square root of 2221323443 is about 47130.9181217595. The cubic root of 2221323443 is about 1304.7799265813.

Adding to 2221323443 its reverse (3443231222), we get a palindrome (5664554665).

The spelling of 2221323443 in words is "two billion, two hundred twenty-one million, three hundred twenty-three thousand, four hundred forty-three".