8221111205 has 8 divisors (see below), whose sum is σ = 9957533472. Its totient is φ = 6515422288.

The previous prime is 8221111201. The next prime is 8221111211. The reversal of 8221111205 is 5021111228.

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 8221111205 - 2² = 8221111201 is a prime.

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 (8221111201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7682747 + ... + 7683816.

It is an arithmetic number, because the mean of its divisors is an integer number (1244691684).

Almost surely, 2^8221111205 is an apocalyptic number.

It is an amenable number.

8221111205 is a deficient number, since it is larger than the sum of its proper divisors (1736422267).

8221111205 is a wasteful number, since it uses less digits than its factorization.

8221111205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15366675.

The product of its (nonzero) digits is 320, while the sum is 23.

The square root of 8221111205 is about 90670.3435804674. The cubic root of 8221111205 is about 2018.2587357737.

Adding to 8221111205 its sum of digits (23), we get a palindrome (8221111228).

The spelling of 8221111205 in words is "eight billion, two hundred twenty-one million, one hundred eleven thousand, two hundred five".