722848221 has 12 divisors (see below), whose sum is σ = 1044347200. Its totient is φ = 481791240.

The previous prime is 722848219. The next prime is 722848241. The reversal of 722848221 is 122848227.

It is not a de Polignac number, because 722848221 - 2¹ = 722848219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722848241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73980 + ... + 83178.

Almost surely, 2^722848221 is an apocalyptic number.

It is an amenable number.

722848221 is a deficient number, since it is larger than the sum of its proper divisors (321498979).

722848221 is a wasteful number, since it uses less digits than its factorization.

722848221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17936 (or 17933 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 722848221 is about 26885.8368104844. The cubic root of 722848221 is about 897.4612490414.

The spelling of 722848221 in words is "seven hundred twenty-two million, eight hundred forty-eight thousand, two hundred twenty-one".