11220213310021 has 2 divisors, whose sum is σ = 11220213310022. Its totient is φ = 11220213310020.

The previous prime is 11220213310013. The next prime is 11220213310063. The reversal of 11220213310021 is 12001331202211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11183934489121 + 36278820900 = 3344239^2 + 190470^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220213310021 - 2³ = 11220213310013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220213110021) 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, 5610106655010 + 5610106655011.

It is an arithmetic number, because the mean of its divisors is an integer number (5610106655011).

Almost surely, 2^{11220213310021} is an apocalyptic number.

It is an amenable number.

11220213310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220213310021 is an equidigital number, since it uses as much as digits as its factorization.

11220213310021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11220213310021 its reverse (12001331202211), we get a palindrome (23221544512232).

The spelling of 11220213310021 in words is "eleven trillion, two hundred twenty billion, two hundred thirteen million, three hundred ten thousand, twenty-one".