2117122227 has 24 divisors (see below), whose sum is σ = 3358188288. Its totient is φ = 1274598000.

The previous prime is 2117122219. The next prime is 2117122229. The reversal of 2117122227 is 7222217112.

It is not a de Polignac number, because 2117122227 - 2³ = 2117122219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2117122227.

It is not an unprimeable number, because it can be changed into a prime (2117122229) 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 23 ways as a sum of consecutive naturals, for example, 55863 + ... + 85760.

It is an arithmetic number, because the mean of its divisors is an integer number (139924512).

Almost surely, 2^2117122227 is an apocalyptic number.

2117122227 is a deficient number, since it is larger than the sum of its proper divisors (1241066061).

2117122227 is a wasteful number, since it uses less digits than its factorization.

2117122227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141791 (or 141788 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 2117122227 is about 46012.1965026666. The cubic root of 2117122227 is about 1284.0501243279.

Adding to 2117122227 its reverse (7222217112), we get a palindrome (9339339339).

The spelling of 2117122227 in words is "two billion, one hundred seventeen million, one hundred twenty-two thousand, two hundred twenty-seven".