822949218721 has 16 divisors (see below), whose sum is σ = 970893721600. Its totient is φ = 682601729040.

The previous prime is 822949218667. The next prime is 822949218727. The reversal of 822949218721 is 127812949228.

It is not a de Polignac number, because 822949218721 - 2⁷ = 822949218593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (822949218727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6158980 + ... + 6291178.

It is an arithmetic number, because the mean of its divisors is an integer number (60680857600).

Almost surely, 2^822949218721 is an apocalyptic number.

It is an amenable number.

822949218721 is a deficient number, since it is larger than the sum of its proper divisors (147944502879).

822949218721 is a wasteful number, since it uses less digits than its factorization.

822949218721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160924.

The product of its digits is 2322432, while the sum is 55.

The spelling of 822949218721 in words is "eight hundred twenty-two billion, nine hundred forty-nine million, two hundred eighteen thousand, seven hundred twenty-one".