222118805 has 4 divisors (see below), whose sum is σ = 266542572. Its totient is φ = 177695040.

The previous prime is 222118781. The next prime is 222118811. The reversal of 222118805 is 508811222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40462321 + 181656484 = 6361^2 + 13478^2 .

It is not a de Polignac number, because 222118805 - 2¹² = 222114709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22211876 + ... + 22211885.

It is an arithmetic number, because the mean of its divisors is an integer number (66635643).

Almost surely, 2^222118805 is an apocalyptic number.

It is an amenable number.

222118805 is a deficient number, since it is larger than the sum of its proper divisors (44423767).

222118805 is an equidigital number, since it uses as much as digits as its factorization.

222118805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44423766.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 222118805 is about 14903.6507272547. The cubic root of 222118805 is about 605.6128889158.

The spelling of 222118805 in words is "two hundred twenty-two million, one hundred eighteen thousand, eight hundred five".