2211440209 has 4 divisors (see below), whose sum is σ = 2412480240. Its totient is φ = 2010400180.

The previous prime is 2211440207. The next prime is 2211440221. The reversal of 2211440209 is 9020441122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2211440209 - 2¹ = 2211440207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211440207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100519999 + ... + 100520020.

It is an arithmetic number, because the mean of its divisors is an integer number (603120060).

Almost surely, 2^2211440209 is an apocalyptic number.

It is an amenable number.

2211440209 is a deficient number, since it is larger than the sum of its proper divisors (201040031).

2211440209 is a wasteful number, since it uses less digits than its factorization.

2211440209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201040030.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2211440209 is about 47025.9525049733. The cubic root of 2211440209 is about 1302.8419500973.

The spelling of 2211440209 in words is "two billion, two hundred eleven million, four hundred forty thousand, two hundred nine".