222066111 has 4 divisors (see below), whose sum is σ = 296088152. Its totient is φ = 148044072.

The previous prime is 222066107. The next prime is 222066139. The reversal of 222066111 is 111660222.

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

It is not a de Polignac number, because 222066111 - 2² = 222066107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222066161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37011016 + ... + 37011021.

It is an arithmetic number, because the mean of its divisors is an integer number (74022038).

Almost surely, 2^222066111 is an apocalyptic number.

222066111 is a deficient number, since it is larger than the sum of its proper divisors (74022041).

222066111 is an equidigital number, since it uses as much as digits as its factorization.

222066111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74022040.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 222066111 is about 14901.8828005054. The cubic root of 222066111 is about 605.5649945927.

The spelling of 222066111 in words is "two hundred twenty-two million, sixty-six thousand, one hundred eleven".