822354390722 has 18 divisors (see below), whose sum is σ = 1301909862393. Its totient is φ = 389524748184.

The previous prime is 822354390701. The next prime is 822354390727. The reversal of 822354390722 is 227093453228.

822354390722 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 2 ways, for example, as 624702125161 + 197652265561 = 790381^2 + 444581^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=641231.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822354390727) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24349904 + ... + 24383652.

Almost surely, 2^822354390722 is an apocalyptic number.

822354390722 is a deficient number, since it is larger than the sum of its proper divisors (479555471671).

822354390722 is an frugal number, since it uses more digits than its factorization.

822354390722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67538 (or 33770 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 822354390722 in words is "eight hundred twenty-two billion, three hundred fifty-four million, three hundred ninety thousand, seven hundred twenty-two".