22110320021 has 2 divisors, whose sum is σ = 22110320022. Its totient is φ = 22110320020.

The previous prime is 22110320009. The next prime is 22110320069. The reversal of 22110320021 is 12002301122.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17269639396 + 4840680625 = 131414^2 + 69575^2 .

It is a cyclic number.

It is not a de Polignac number, because 22110320021 - 2¹⁴ = 22110303637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22110319978 and 22110320005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22110320321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055160010 + 11055160011.

It is an arithmetic number, because the mean of its divisors is an integer number (11055160011).

Almost surely, 2^22110320021 is an apocalyptic number.

It is an amenable number.

22110320021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22110320021 is an equidigital number, since it uses as much as digits as its factorization.

22110320021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 22110320021 its reverse (12002301122), we get a palindrome (34112621143).

The spelling of 22110320021 in words is "twenty-two billion, one hundred ten million, three hundred twenty thousand, twenty-one".