11021291 has 2 divisors, whose sum is σ = 11021292. Its totient is φ = 11021290.

The previous prime is 11021281. The next prime is 11021293. The reversal of 11021291 is 19212011.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11021291 is a prime.

Together with 11021293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11021293) 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, 5510645 + 5510646.

It is an arithmetic number, because the mean of its divisors is an integer number (5510646).

Almost surely, 2^11021291 is an apocalyptic number.

11021291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11021291 is an equidigital number, since it uses as much as digits as its factorization.

11021291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

The square root of 11021291 is about 3319.8329777264. The cubic root of 11021291 is about 222.5414037329.

The spelling of 11021291 in words is "eleven million, twenty-one thousand, two hundred ninety-one".