2211870065 has 16 divisors (see below), whose sum is σ = 2714367936. Its totient is φ = 1729771200.

The previous prime is 2211870061. The next prime is 2211870079. The reversal of 2211870065 is 5600781122.

It is not a de Polignac number, because 2211870065 - 2² = 2211870061 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211870061) 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 15 ways as a sum of consecutive naturals, for example, 27470 + ... + 71960.

It is an arithmetic number, because the mean of its divisors is an integer number (169647996).

Almost surely, 2^2211870065 is an apocalyptic number.

It is an amenable number.

2211870065 is a deficient number, since it is larger than the sum of its proper divisors (502497871).

2211870065 is a wasteful number, since it uses less digits than its factorization.

2211870065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44720.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 2211870065 is about 47030.5226953731. The cubic root of 2211870065 is about 1302.9263593651.

The spelling of 2211870065 in words is "two billion, two hundred eleven million, eight hundred seventy thousand, sixty-five".