11021866 has 16 divisors (see below), whose sum is σ = 17075520. Its totient is φ = 5332320.

The previous prime is 11021863. The next prime is 11021867. The reversal of 11021866 is 66812011.

It is a self number, because there is not a number n which added to its sum of digits gives 11021866.

It is not an unprimeable number, because it can be changed into a prime (11021861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10915 + ... + 11881.

It is an arithmetic number, because the mean of its divisors is an integer number (1067220).

Almost surely, 2^11021866 is an apocalyptic number.

11021866 is a deficient number, since it is larger than the sum of its proper divisors (6053654).

11021866 is a wasteful number, since it uses less digits than its factorization.

11021866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 11021866 is about 3319.9195773392. The cubic root of 11021866 is about 222.5452737902.

Adding to 11021866 its reverse (66812011), we get a palindrome (77833877).

The spelling of 11021866 in words is "eleven million, twenty-one thousand, eight hundred sixty-six".