222788805128 has 36 divisors (see below), whose sum is σ = 421872098445. Its totient is φ = 110300343840.

The previous prime is 222788805097. The next prime is 222788805131. The reversal of 222788805128 is 821508887222.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 213778619044 + 9010186084 = 462362^2 + 94922^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333758.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222788805128.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 145517723 + ... + 145519253.

Almost surely, 2^222788805128 is an apocalyptic number.

It is an amenable number.

222788805128 is a deficient number, since it is larger than the sum of its proper divisors (199083293317).

222788805128 is an frugal number, since it uses more digits than its factorization.

222788805128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 53.

The spelling of 222788805128 in words is "two hundred twenty-two billion, seven hundred eighty-eight million, eight hundred five thousand, one hundred twenty-eight".