11222120211101 has 2 divisors, whose sum is σ = 11222120211102. Its totient is φ = 11222120211100.

The previous prime is 11222120211097. The next prime is 11222120211119. The reversal of 11222120211101 is 10111202122211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11166464323876 + 55655887225 = 3341626^2 + 235915^2 .

It is an emirp because it is prime and its reverse (10111202122211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11222120211101 - 2² = 11222120211097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11222120211101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222120411101) 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, 5611060105550 + 5611060105551.

It is an arithmetic number, because the mean of its divisors is an integer number (5611060105551).

Almost surely, 2^{11222120211101} is an apocalyptic number.

It is an amenable number.

11222120211101 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222120211101 is an equidigital number, since it uses as much as digits as its factorization.

11222120211101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11222120211101 its reverse (10111202122211), we get a palindrome (21333322333312).

The spelling of 11222120211101 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty million, two hundred eleven thousand, one hundred one".