2172124086 has 32 divisors (see below), whose sum is σ = 4771008000. Its totient is φ = 653798880.

The previous prime is 2172124067. The next prime is 2172124091. The reversal of 2172124086 is 6804212712.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100606 + ... + 120273.

It is an arithmetic number, because the mean of its divisors is an integer number (149094000).

Almost surely, 2^2172124086 is an apocalyptic number.

2172124086 is an abundant number, since it is smaller than the sum of its proper divisors (2598883914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2172124086 is a wasteful number, since it uses less digits than its factorization.

2172124086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221044.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 2172124086 is about 46606.0520318982. The cubic root of 2172124086 is about 1295.0748725115.

Adding to 2172124086 its reverse (6804212712), we get a palindrome (8976336798).

The spelling of 2172124086 in words is "two billion, one hundred seventy-two million, one hundred twenty-four thousand, eighty-six".