8221722911 has 4 divisors (see below), whose sum is σ = 8221905024. Its totient is φ = 8221540800.

The previous prime is 8221722863. The next prime is 8221722947. The reversal of 8221722911 is 1192271228.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221722911 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 (8221724911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33026 + ... + 132416.

It is an arithmetic number, because the mean of its divisors is an integer number (2055476256).

Almost surely, 2^8221722911 is an apocalyptic number.

8221722911 is a deficient number, since it is larger than the sum of its proper divisors (182113).

8221722911 is an equidigital number, since it uses as much as digits as its factorization.

8221722911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182112.

The product of its digits is 8064, while the sum is 35.

The square root of 8221722911 is about 90673.7167595991. The cubic root of 8221722911 is about 2018.3087918763.

The spelling of 8221722911 in words is "eight billion, two hundred twenty-one million, seven hundred twenty-two thousand, nine hundred eleven".