11200212209 has 4 divisors (see below), whose sum is σ = 11326057380. Its totient is φ = 11074367040.

The previous prime is 11200212197. The next prime is 11200212217. The reversal of 11200212209 is 90221200211.

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 1863821584 + 9336390625 = 43172^2 + 96625^2 .

It is a cyclic number.

It is not a de Polignac number, because 11200212209 - 2¹⁶ = 11200146673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11200232209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62922452 + ... + 62922629.

It is an arithmetic number, because the mean of its divisors is an integer number (2831514345).

Almost surely, 2^11200212209 is an apocalyptic number.

It is an amenable number.

11200212209 is a deficient number, since it is larger than the sum of its proper divisors (125845171).

11200212209 is an equidigital number, since it uses as much as digits as its factorization.

11200212209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125845170.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 11200212209 in words is "eleven billion, two hundred million, two hundred twelve thousand, two hundred nine".