2222201209 has 4 divisors (see below), whose sum is σ = 2222419060. Its totient is φ = 2221983360.

The previous prime is 2222201159. The next prime is 2222201231. The reversal of 2222201209 is 9021022222.

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 1653235600 + 568965609 = 40660^2 + 23853^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222201209 - 2²⁷ = 2087983481 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2222201209.

It is not an unprimeable number, because it can be changed into a prime (2222201279) 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, 92832 + ... + 114289.

It is an arithmetic number, because the mean of its divisors is an integer number (555604765).

Almost surely, 2^2222201209 is an apocalyptic number.

It is an amenable number.

2222201209 is a deficient number, since it is larger than the sum of its proper divisors (217851).

2222201209 is a wasteful number, since it uses less digits than its factorization.

2222201209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217850.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2222201209 is about 47140.2291996974. The cubic root of 2222201209 is about 1304.9517671775.

The spelling of 2222201209 in words is "two billion, two hundred twenty-two million, two hundred one thousand, two hundred nine".