11922811 has 2 divisors, whose sum is σ = 11922812. Its totient is φ = 11922810.

The previous prime is 11922803. The next prime is 11922821. The reversal of 11922811 is 11822911.

11922811 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (11822911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11922811 - 2³ = 11922803 is a prime.

It is not a weakly prime, because it can be changed into another prime (11922821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5961405 + 5961406.

It is an arithmetic number, because the mean of its divisors is an integer number (5961406).

Almost surely, 2^11922811 is an apocalyptic number.

11922811 is a deficient number, since it is larger than the sum of its proper divisors (1).

11922811 is an equidigital number, since it uses as much as digits as its factorization.

11922811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 25.

The square root of 11922811 is about 3452.9423684736. The cubic root of 11922811 is about 228.4509069422.

The spelling of 11922811 in words is "eleven million, nine hundred twenty-two thousand, eight hundred eleven".