11088821 has 2 divisors, whose sum is σ = 11088822. Its totient is φ = 11088820.

The previous prime is 11088769. The next prime is 11088823. The reversal of 11088821 is 12888011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8151025 + 2937796 = 2855^2 + 1714^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11088821 is a prime.

Together with 11088823, 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 (11088823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5544410 + 5544411.

It is an arithmetic number, because the mean of its divisors is an integer number (5544411).

Almost surely, 2^11088821 is an apocalyptic number.

It is an amenable number.

11088821 is a deficient number, since it is larger than the sum of its proper divisors (1).

11088821 is an equidigital number, since it uses as much as digits as its factorization.

11088821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 29.

The square root of 11088821 is about 3329.9881381170. The cubic root of 11088821 is about 222.9949994522.

The spelling of 11088821 in words is "eleven million, eighty-eight thousand, eight hundred twenty-one".