11111020222111 has 2 divisors, whose sum is σ = 11111020222112. Its totient is φ = 11111020222110.

The previous prime is 11111020222051. The next prime is 11111020222123. The reversal of 11111020222111 is 11122202011111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111020222111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111020222151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555510111055 + 5555510111056.

It is an arithmetic number, because the mean of its divisors is an integer number (5555510111056).

Almost surely, 2^{11111020222111} is an apocalyptic number.

11111020222111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111020222111 is an equidigital number, since it uses as much as digits as its factorization.

11111020222111 is an evil number, because the sum of its binary digits is even.

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

Adding to 11111020222111 its reverse (11122202011111), we get a palindrome (22233222233222).

The spelling of 11111020222111 in words is "eleven trillion, one hundred eleven billion, twenty million, two hundred twenty-two thousand, one hundred eleven".