11222111225111 has 2 divisors, whose sum is σ = 11222111225112. Its totient is φ = 11222111225110.

The previous prime is 11222111225089. The next prime is 11222111225113. The reversal of 11222111225111 is 11152211122211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11222111225111 is a prime.

Together with 11222111225113, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11222111225113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611055612555 + 5611055612556.

It is an arithmetic number, because the mean of its divisors is an integer number (5611055612556).

Almost surely, 2^{11222111225111} is an apocalyptic number.

11222111225111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222111225111 is an equidigital number, since it uses as much as digits as its factorization.

11222111225111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 160, while the sum is 23.

Adding to 11222111225111 its reverse (11152211122211), we get a palindrome (22374322347322).

The spelling of 11222111225111 in words is "eleven trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-five thousand, one hundred eleven".