2117822144 has 28 divisors (see below), whose sum is σ = 4204124688. Its totient is φ = 1058515200.

The previous prime is 2117822131. The next prime is 2117822153. The reversal of 2117822144 is 4412287112.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 2117822144.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 246074 + ... + 254534.

Almost surely, 2^2117822144 is an apocalyptic number.

It is an amenable number.

2117822144 is a deficient number, since it is larger than the sum of its proper divisors (2086302544).

2117822144 is an equidigital number, since it uses as much as digits as its factorization.

2117822144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12384 (or 12374 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 2117822144 is about 46019.8016510284. The cubic root of 2117822144 is about 1284.1916103316.

The spelling of 2117822144 in words is "two billion, one hundred seventeen million, eight hundred twenty-two thousand, one hundred forty-four".