11012209 has 12 divisors (see below), whose sum is σ = 12629196. Its totient is φ = 9564672.

The previous prime is 11012207. The next prime is 11012213. The reversal of 11012209 is 90221011.

It can be written as a sum of positive squares in 6 ways, for example, as 1617984 + 9394225 = 1272^2 + 3065^2 .

It is not a de Polignac number, because 11012209 - 2¹ = 11012207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012192 and 11012201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 957 + ... + 4789.

It is an arithmetic number, because the mean of its divisors is an integer number (1052433).

Almost surely, 2^11012209 is an apocalyptic number.

It is an amenable number.

11012209 is a deficient number, since it is larger than the sum of its proper divisors (1616987).

11012209 is a wasteful number, since it uses less digits than its factorization.

11012209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876 (or 3863 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 11012209 is about 3318.4648559236. The cubic root of 11012209 is about 222.4802591584.

The spelling of 11012209 in words is "eleven million, twelve thousand, two hundred nine".