2117196997722 has 48 divisors (see below), whose sum is σ = 4863382977960. Its totient is φ = 663359318016.

The previous prime is 2117196997693. The next prime is 2117196997753. The reversal of 2117196997722 is 2277996917112.

It can be written as a sum of positive squares in 4 ways, for example, as 1255903490241 + 861293507481 = 1120671^2 + 928059^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2117196997722.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4238847 + ... + 4711922.

Almost surely, 2^{2117196997722} is an apocalyptic number.

2117196997722 is an abundant number, since it is smaller than the sum of its proper divisors (2746185980238).

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

2117196997722 is a wasteful number, since it uses less digits than its factorization.

2117196997722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8951567 (or 8951564 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 63.

The spelling of 2117196997722 in words is "two trillion, one hundred seventeen billion, one hundred ninety-six million, nine hundred ninety-seven thousand, seven hundred twenty-two".