11222122122811 has 2 divisors, whose sum is σ = 11222122122812. Its totient is φ = 11222122122810.

The previous prime is 11222122122773. The next prime is 11222122122847. The reversal of 11222122122811 is 11822122122211.

It is a strong prime.

It is an emirp because it is prime and its reverse (11822122122211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11222122122811 - 2²⁷ = 11221987905083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11222122122811.

It is not a weakly prime, because it can be changed into another prime (11222122152811) 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, 5611061061405 + 5611061061406.

It is an arithmetic number, because the mean of its divisors is an integer number (5611061061406).

Almost surely, 2^{11222122122811} is an apocalyptic number.

11222122122811 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222122122811 is an equidigital number, since it uses as much as digits as its factorization.

11222122122811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 28.

The spelling of 11222122122811 in words is "eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, eight hundred eleven".