11021986 has 8 divisors (see below), whose sum is σ = 16845084. Its totient is φ = 5406960.

The previous prime is 11021981. The next prime is 11021993. The reversal of 11021986 is 68912011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10989225 + 32761 = 3315^2 + 181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (11021981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51885 + ... + 52096.

Almost surely, 2^11021986 is an apocalyptic number.

11021986 is a deficient number, since it is larger than the sum of its proper divisors (5823098).

11021986 is a wasteful number, since it uses less digits than its factorization.

11021986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104036.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11021986 is about 3319.9376500169. The cubic root of 11021986 is about 222.5460814373.

Adding to 11021986 its reverse (68912011), we get a palindrome (79933997).

The spelling of 11021986 in words is "eleven million, twenty-one thousand, nine hundred eighty-six".