9868010712921 has 27 divisors (see below), whose sum is σ = 14564171766261. Its totient is φ = 6438413022264.

The previous prime is 9868010712881. The next prime is 9868010712977. The reversal of 9868010712921 is 1292170108689.

It is a happy number.

The square root of 9868010712921 is 3141339.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 9868010712921 - 2¹⁹ = 9868010188633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9868010752921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 442917660 + ... + 442939938.

Almost surely, 2^{9868010712921} is an apocalyptic number.

9868010712921 is the 3141339-th square number.

9868010712921 is the 1570670-th centered octagonal number.

It is an amenable number.

9868010712921 is a deficient number, since it is larger than the sum of its proper divisors (4696161053340).

9868010712921 is an frugal number, since it uses more digits than its factorization.

9868010712921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44658 (or 22329 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 54.

The spelling of 9868010712921 in words is "nine trillion, eight hundred sixty-eight billion, ten million, seven hundred twelve thousand, nine hundred twenty-one".