2162022209 has 8 divisors (see below), whose sum is σ = 2345034888. Its totient is φ = 1985213440.

The previous prime is 2162022199. The next prime is 2162022223. The reversal of 2162022209 is 9022202612.

It can be written as a sum of positive squares in 4 ways, for example, as 304153600 + 1857868609 = 17440^2 + 43103^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2162022209 - 2⁴ = 2162022193 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 (2162022299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1550252 + ... + 1551645.

It is an arithmetic number, because the mean of its divisors is an integer number (293129361).

Almost surely, 2^2162022209 is an apocalyptic number.

It is an amenable number.

2162022209 is a deficient number, since it is larger than the sum of its proper divisors (183012679).

2162022209 is a wasteful number, since it uses less digits than its factorization.

2162022209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3101955.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2162022209 is about 46497.5505698956. The cubic root of 2162022209 is about 1293.0640879385.

The spelling of 2162022209 in words is "two billion, one hundred sixty-two million, twenty-two thousand, two hundred nine".