822821801 has 4 divisors (see below), whose sum is σ = 828271104. Its totient is φ = 817372500.

The previous prime is 822821749. The next prime is 822821819. The reversal of 822821801 is 108128228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 822821801 - 2¹⁰ = 822820777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822821891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2724425 + ... + 2724726.

It is an arithmetic number, because the mean of its divisors is an integer number (207067776).

Almost surely, 2^822821801 is an apocalyptic number.

It is an amenable number.

822821801 is a deficient number, since it is larger than the sum of its proper divisors (5449303).

822821801 is a wasteful number, since it uses less digits than its factorization.

822821801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5449302.

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 822821801 is about 28684.8705940954. The cubic root of 822821801 is about 937.0625826919.

The spelling of 822821801 in words is "eight hundred twenty-two million, eight hundred twenty-one thousand, eight hundred one".