866422211 has 4 divisors (see below), whose sum is σ = 912023400. Its totient is φ = 820821024.

The previous prime is 866422201. The next prime is 866422231. The reversal of 866422211 is 112224668.

866422211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 866422211 - 2⁶ = 866422147 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (866422201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22800566 + ... + 22800603.

It is an arithmetic number, because the mean of its divisors is an integer number (228005850).

Almost surely, 2^866422211 is an apocalyptic number.

866422211 is a deficient number, since it is larger than the sum of its proper divisors (45601189).

866422211 is a wasteful number, since it uses less digits than its factorization.

866422211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45601188.

The product of its digits is 9216, while the sum is 32.

The square root of 866422211 is about 29435.0507218860. The cubic root of 866422211 is about 953.3298517187.

Adding to 866422211 its reverse (112224668), we get a palindrome (978646879).

The spelling of 866422211 in words is "eight hundred sixty-six million, four hundred twenty-two thousand, two hundred eleven".