868862286221 has 4 divisors (see below), whose sum is σ = 868873181244. Its totient is φ = 868851391200.

The previous prime is 868862286163. The next prime is 868862286223. The reversal of 868862286221 is 122682268868.

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 787232082121 + 81630204100 = 887261^2 + 285710^2 .

It is a cyclic number.

It is not a de Polignac number, because 868862286221 - 2¹⁴ = 868862269837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868862286223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5327000 + ... + 5487681.

It is an arithmetic number, because the mean of its divisors is an integer number (217218295311).

Almost surely, 2^868862286221 is an apocalyptic number.

It is an amenable number.

868862286221 is a deficient number, since it is larger than the sum of its proper divisors (10895023).

868862286221 is a wasteful number, since it uses less digits than its factorization.

868862286221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10895022.

The product of its digits is 14155776, while the sum is 59.

The spelling of 868862286221 in words is "eight hundred sixty-eight billion, eight hundred sixty-two million, two hundred eighty-six thousand, two hundred twenty-one".