11103220330021 has 2 divisors, whose sum is σ = 11103220330022. Its totient is φ = 11103220330020.

The previous prime is 11103220330019. The next prime is 11103220330099. The reversal of 11103220330021 is 12003302230111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11053663337025 + 49556992996 = 3324705^2 + 222614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11103220330021 - 2¹ = 11103220330019 is a prime.

Together with 11103220330019, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11103220330001) 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, 5551610165010 + 5551610165011.

It is an arithmetic number, because the mean of its divisors is an integer number (5551610165011).

Almost surely, 2^{11103220330021} is an apocalyptic number.

It is an amenable number.

11103220330021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11103220330021 is an equidigital number, since it uses as much as digits as its factorization.

11103220330021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 11103220330021 its reverse (12003302230111), we get a palindrome (23106522560132).

The spelling of 11103220330021 in words is "eleven trillion, one hundred three billion, two hundred twenty million, three hundred thirty thousand, twenty-one".