2209000001 has 4 divisors (see below), whose sum is σ = 2378923092. Its totient is φ = 2039076912.

The previous prime is 2208999973. The next prime is 2209000007. The reversal of 2209000001 is 1000009022.

It is a Cunningham number, because it is equal to 47000²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000009022 = 2 ⋅500004511.

It can be written as a sum of positive squares in 2 ways, for example, as 326741776 + 1882258225 = 18076^2 + 43385^2 .

It is a cyclic number.

It is not a de Polignac number, because 2209000001 - 2²² = 2204805697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2209000001.

It is not an unprimeable number, because it can be changed into a prime (2209000007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84961526 + ... + 84961551.

It is an arithmetic number, because the mean of its divisors is an integer number (594730773).

Almost surely, 2^2209000001 is an apocalyptic number.

It is an amenable number.

2209000001 is a deficient number, since it is larger than the sum of its proper divisors (169923091).

2209000001 is a wasteful number, since it uses less digits than its factorization.

2209000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169923090.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2209000001 is about 47000.0000106383. Note that the first 4 decimals coincide. The cubic root of 2209000001 is about 1302.3625678654.

Adding to 2209000001 its reverse (1000009022), we get a palindrome (3209009023).

The spelling of 2209000001 in words is "two billion, two hundred nine million, one", and thus it is an aban number.