821222096 has 10 divisors (see below), whose sum is σ = 1591117842. Its totient is φ = 410611040.

The previous prime is 821222093. The next prime is 821222113. The reversal of 821222096 is 690222128.

821222096 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 668946496 + 152275600 = 25864^2 + 12340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821222093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25663175 + ... + 25663206.

Almost surely, 2^821222096 is an apocalyptic number.

It is an amenable number.

821222096 is a deficient number, since it is larger than the sum of its proper divisors (769895746).

821222096 is a wasteful number, since it uses less digits than its factorization.

821222096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51326389 (or 51326383 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 821222096 is about 28656.9729036407. The cubic root of 821222096 is about 936.4549192425.

Adding to 821222096 its sum of digits (32), we get a palindrome (821222128).

The spelling of 821222096 in words is "eight hundred twenty-one million, two hundred twenty-two thousand, ninety-six".