8221100 has 36 divisors (see below), whose sum is σ = 17967600. Its totient is φ = 3264960.

The previous prime is 8221069. The next prime is 8221111. The reversal of 8221100 is 11228.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22721 + ... + 23079.

It is an arithmetic number, because the mean of its divisors is an integer number (499100).

Almost surely, 2^8221100 is an apocalyptic number.

It is an amenable number.

8221100 is an abundant number, since it is smaller than the sum of its proper divisors (9746500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8221100 is a wasteful number, since it uses less digits than its factorization.

8221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 595 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 8221100 is about 2867.2460654782. The cubic root of 8221100 is about 201.8257818842.

Adding to 8221100 its reverse (11228), we get a palindrome (8232328).

The spelling of 8221100 in words is "eight million, two hundred twenty-one thousand, one hundred".