11220211121101 has 2 divisors, whose sum is σ = 11220211121102. Its totient is φ = 11220211121100.

The previous prime is 11220211121087. The next prime is 11220211121117. The reversal of 11220211121101 is 10112111202211.

It is an a-pointer prime, because the next prime (11220211121117) can be obtained adding 11220211121101 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10181676883876 + 1038534237225 = 3190874^2 + 1019085^2 .

It is an emirp because it is prime and its reverse (10112111202211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11220211121101 - 2⁹ = 11220211120589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220211121191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610105560550 + 5610105560551.

It is an arithmetic number, because the mean of its divisors is an integer number (5610105560551).

Almost surely, 2^{11220211121101} is an apocalyptic number.

It is an amenable number.

11220211121101 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220211121101 is an equidigital number, since it uses as much as digits as its factorization.

11220211121101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11220211121101 its reverse (10112111202211), we get a palindrome (21332322323312).

The spelling of 11220211121101 in words is "eleven trillion, two hundred twenty billion, two hundred eleven million, one hundred twenty-one thousand, one hundred one".