222347128658 has 6 divisors (see below), whose sum is σ = 333521693271. Its totient is φ = 111173230902.

The previous prime is 222347128459. The next prime is 222347128667. The reversal of 222347128658 is 856821743222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 111173564329 + 111173564329 = 333427^2 + 333427^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333427.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 500141 + ... + 833567.

Almost surely, 2^222347128658 is an apocalyptic number.

222347128658 is a deficient number, since it is larger than the sum of its proper divisors (111174564613).

222347128658 is an frugal number, since it uses more digits than its factorization.

222347128658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666856 (or 333429 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

Multiplying 222347128658 by its sum of digits (50), we get a square (11117356432900 = 3334270²).

The spelling of 222347128658 in words is "two hundred twenty-two billion, three hundred forty-seven million, one hundred twenty-eight thousand, six hundred fifty-eight".