2172132117 has 24 divisors (see below), whose sum is σ = 3304884960. Its totient is φ = 1370947680.

The previous prime is 2172132113. The next prime is 2172132139. The reversal of 2172132117 is 7112312712.

It is not a de Polignac number, because 2172132117 - 2² = 2172132113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172132113) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 322767 + ... + 329427.

It is an arithmetic number, because the mean of its divisors is an integer number (137703540).

Almost surely, 2^2172132117 is an apocalyptic number.

It is an amenable number.

2172132117 is a deficient number, since it is larger than the sum of its proper divisors (1132752843).

2172132117 is a wasteful number, since it uses less digits than its factorization.

2172132117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8593 (or 8590 counting only the distinct ones).

The product of its digits is 1176, while the sum is 27.

The square root of 2172132117 is about 46606.1381901569. The cubic root of 2172132117 is about 1295.0764686041.

Adding to 2172132117 its reverse (7112312712), we get a palindrome (9284444829).

The spelling of 2172132117 in words is "two billion, one hundred seventy-two million, one hundred thirty-two thousand, one hundred seventeen".