2221143444643 has 2 divisors, whose sum is σ = 2221143444644. Its totient is φ = 2221143444642.

The previous prime is 2221143444607. The next prime is 2221143444649. The reversal of 2221143444643 is 3464443411222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221143444643 - 2³⁷ = 2083704491171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221143444596 and 2221143444605.

It is not a weakly prime, because it can be changed into another prime (2221143444649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110571722321 + 1110571722322.

It is an arithmetic number, because the mean of its divisors is an integer number (1110571722322).

Almost surely, 2^{2221143444643} is an apocalyptic number.

2221143444643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221143444643 is an equidigital number, since it uses as much as digits as its factorization.

2221143444643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 442368, while the sum is 40.

Adding to 2221143444643 its reverse (3464443411222), we get a palindrome (5685586855865).

The spelling of 2221143444643 in words is "two trillion, two hundred twenty-one billion, one hundred forty-three million, four hundred forty-four thousand, six hundred forty-three".