222265779912 has 108 divisors (see below), whose sum is σ = 661800330555. Its totient is φ = 67339932000.

The previous prime is 222265779907. The next prime is 222265779919. The reversal of 222265779912 is 219977562222.

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.

222265779912 is a `hidden beast` number, since 222 + 265 + 7 + 79 + 91 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 111132889956 + 111132889956 = 333366^2 + 333366^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333366.

It is not an unprimeable number, because it can be changed into a prime (222265779919) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 44001787 + ... + 44006837.

Almost surely, 2^222265779912 is an apocalyptic number.

222265779912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222265779912

222265779912 is an abundant number, since it is smaller than the sum of its proper divisors (439534550643).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222265779912 is an equidigital number, since it uses as much as digits as its factorization.

222265779912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10136 (or 5067 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The spelling of 222265779912 in words is "two hundred twenty-two billion, two hundred sixty-five million, seven hundred seventy-nine thousand, nine hundred twelve".