2172013102217 has 8 divisors (see below), whose sum is σ = 2628318375936. Its totient is φ = 1752212250432.

The previous prime is 2172013102163. The next prime is 2172013102219. The reversal of 2172013102217 is 7122013102712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2172013102217 - 2⁸ = 2172013101961 is a prime.

It is a super-3 number, since 3×2172013102217³ (a number of 38 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2172013102217.

It is not an unprimeable number, because it can be changed into a prime (2172013102219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9126105353 + ... + 9126105590.

It is an arithmetic number, because the mean of its divisors is an integer number (328539796992).

Almost surely, 2^{2172013102217} is an apocalyptic number.

It is an amenable number.

2172013102217 is a deficient number, since it is larger than the sum of its proper divisors (456305273719).

2172013102217 is a wasteful number, since it uses less digits than its factorization.

2172013102217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18252210967.

The product of its (nonzero) digits is 2352, while the sum is 29.

Adding to 2172013102217 its reverse (7122013102712), we get a palindrome (9294026204929).

The spelling of 2172013102217 in words is "two trillion, one hundred seventy-two billion, thirteen million, one hundred two thousand, two hundred seventeen".