868107372221 has 8 divisors (see below), whose sum is σ = 870432546360. Its totient is φ = 865782678528.

The previous prime is 868107372173. The next prime is 868107372229. The reversal of 868107372221 is 122273701868.

It can be written as a sum of positive squares in 4 ways, for example, as 12103080196 + 856004292025 = 110014^2 + 925205^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 868107372221 - 2¹⁸ = 868107110077 is a prime.

It is a super-2 number, since 2×868107372221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868107372229) 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 7 ways as a sum of consecutive naturals, for example, 3657065 + ... + 3887201.

It is an arithmetic number, because the mean of its divisors is an integer number (108804068295).

Almost surely, 2^868107372221 is an apocalyptic number.

It is an amenable number.

868107372221 is a deficient number, since it is larger than the sum of its proper divisors (2325174139).

868107372221 is a wasteful number, since it uses less digits than its factorization.

868107372221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240223.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 868107372221 in words is "eight hundred sixty-eight billion, one hundred seven million, three hundred seventy-two thousand, two hundred twenty-one".