722221428715 has 16 divisors (see below), whose sum is σ = 880136318880. Its totient is φ = 568860659200.

The previous prime is 722221428661. The next prime is 722221428727. The reversal of 722221428715 is 517824122227.

It is not a de Polignac number, because 722221428715 - 2²¹ = 722219331563 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3904414 + ... + 4085203.

It is an arithmetic number, because the mean of its divisors is an integer number (55008519930).

Almost surely, 2^722221428715 is an apocalyptic number.

722221428715 is a deficient number, since it is larger than the sum of its proper divisors (157914890165).

722221428715 is a wasteful number, since it uses less digits than its factorization.

722221428715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989902.

The product of its digits is 250880, while the sum is 43.

The spelling of 722221428715 in words is "seven hundred twenty-two billion, two hundred twenty-one million, four hundred twenty-eight thousand, seven hundred fifteen".