11085021 has 6 divisors (see below), whose sum is σ = 16011710. Its totient is φ = 7390008.

The previous prime is 11085007. The next prime is 11085023. The reversal of 11085021 is 12058011.

11085021 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 7128900 + 3956121 = 2670^2 + 1989^2 .

It is not a de Polignac number, because 11085021 - 2⁷ = 11084893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11084985 and 11085003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11085023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 615826 + ... + 615843.

Almost surely, 2^11085021 is an apocalyptic number.

It is an amenable number.

11085021 is a deficient number, since it is larger than the sum of its proper divisors (4926689).

11085021 is a wasteful number, since it uses less digits than its factorization.

11085021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231675 (or 1231672 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 11085021 is about 3329.4175166236. The cubic root of 11085021 is about 222.9695240113.

The spelling of 11085021 in words is "eleven million, eighty-five thousand, twenty-one".