9868100221097 has 4 divisors (see below), whose sum is σ = 10134805632516. Its totient is φ = 9601394809680.

The previous prime is 9868100221069. The next prime is 9868100221139. The reversal of 9868100221097 is 7901220018689.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7015315038736 + 2852785182361 = 2648644^2 + 1689019^2 .

It is a cyclic number.

It is not a de Polignac number, because 9868100221097 - 2³⁰ = 9867026479273 is a prime.

It is a super-2 number, since 2×9868100221097² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9868100221297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133352705654 + ... + 133352705727.

It is an arithmetic number, because the mean of its divisors is an integer number (2533701408129).

Almost surely, 2^{9868100221097} is an apocalyptic number.

It is an amenable number.

9868100221097 is a deficient number, since it is larger than the sum of its proper divisors (266705411419).

9868100221097 is a wasteful number, since it uses less digits than its factorization.

9868100221097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266705411418.

The product of its (nonzero) digits is 870912, while the sum is 53.

The spelling of 9868100221097 in words is "nine trillion, eight hundred sixty-eight billion, one hundred million, two hundred twenty-one thousand, ninety-seven".