2212211009 has 4 divisors (see below), whose sum is σ = 2240213760. Its totient is φ = 2184208260.

The previous prime is 2212210999. The next prime is 2212211063. The reversal of 2212211009 is 9001122122.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-2212211009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2212211069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14001257 + ... + 14001414.

It is an arithmetic number, because the mean of its divisors is an integer number (560053440).

Almost surely, 2^2212211009 is an apocalyptic number.

It is an amenable number.

2212211009 is a deficient number, since it is larger than the sum of its proper divisors (28002751).

2212211009 is an equidigital number, since it uses as much as digits as its factorization.

2212211009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28002750.

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

The square root of 2212211009 is about 47034.1472655772. The cubic root of 2212211009 is about 1302.9933015285.

The spelling of 2212211009 in words is "two billion, two hundred twelve million, two hundred eleven thousand, nine".