221103223321 has 2 divisors, whose sum is σ = 221103223322. Its totient is φ = 221103223320.

The previous prime is 221103223261. The next prime is 221103223357. The reversal of 221103223321 is 123322301122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128450560000 + 92652663321 = 358400^2 + 304389^2 .

It is a cyclic number.

It is not a de Polignac number, because 221103223321 - 2³⁵ = 186743484953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221103223292 and 221103223301.

It is not a weakly prime, because it can be changed into another prime (221103223721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551611660 + 110551611661.

It is an arithmetic number, because the mean of its divisors is an integer number (110551611661).

Almost surely, 2^221103223321 is an apocalyptic number.

It is an amenable number.

221103223321 is a deficient number, since it is larger than the sum of its proper divisors (1).

221103223321 is an equidigital number, since it uses as much as digits as its factorization.

221103223321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 221103223321 its reverse (123322301122), we get a palindrome (344425524443).

The spelling of 221103223321 in words is "two hundred twenty-one billion, one hundred three million, two hundred twenty-three thousand, three hundred twenty-one".