2171223116 has 24 divisors (see below), whose sum is σ = 3819224640. Its totient is φ = 1080030672.

The previous prime is 2171223107. The next prime is 2171223143. The reversal of 2171223116 is 6113221712.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 807911 + ... + 810593.

It is an arithmetic number, because the mean of its divisors is an integer number (159134360).

Almost surely, 2^2171223116 is an apocalyptic number.

It is an amenable number.

2171223116 is a deficient number, since it is larger than the sum of its proper divisors (1648001524).

2171223116 is a wasteful number, since it uses less digits than its factorization.

2171223116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3653 (or 3651 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 2171223116 is about 46596.3852246073. The cubic root of 2171223116 is about 1294.8957874428.

Adding to 2171223116 its reverse (6113221712), we get a palindrome (8284444828).

The spelling of 2171223116 in words is "two billion, one hundred seventy-one million, two hundred twenty-three thousand, one hundred sixteen".