11020985 has 4 divisors (see below), whose sum is σ = 13225188. Its totient is φ = 8816784.

The previous prime is 11020973. The next prime is 11020987. The reversal of 11020985 is 58902011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4405801 + 6615184 = 2099^2 + 2572^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020985 - 2⁶ = 11020921 is a prime.

It is a super-2 number, since 2×11020985² = 242924220740450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11020987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102094 + ... + 1102103.

It is an arithmetic number, because the mean of its divisors is an integer number (3306297).

Almost surely, 2^11020985 is an apocalyptic number.

It is an amenable number.

11020985 is a deficient number, since it is larger than the sum of its proper divisors (2204203).

11020985 is an equidigital number, since it uses as much as digits as its factorization.

11020985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204202.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 11020985 is about 3319.7868907507. The cubic root of 11020985 is about 222.5393441345.

Adding to 11020985 its reverse (58902011), we get a palindrome (69922996).

The spelling of 11020985 in words is "eleven million, twenty thousand, nine hundred eighty-five".