222042111 has 4 divisors (see below), whose sum is σ = 296056152. Its totient is φ = 148028072.

The previous prime is 222042103. The next prime is 222042127. The reversal of 222042111 is 111240222.

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

It is a cyclic number.

It is not a de Polignac number, because 222042111 - 2³ = 222042103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222042211) 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, 37007016 + ... + 37007021.

It is an arithmetic number, because the mean of its divisors is an integer number (74014038).

Almost surely, 2^222042111 is an apocalyptic number.

222042111 is a deficient number, since it is larger than the sum of its proper divisors (74014041).

222042111 is an equidigital number, since it uses as much as digits as its factorization.

222042111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74014040.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 222042111 is about 14901.0775113748. The cubic root of 222042111 is about 605.5431781414.

Adding to 222042111 its reverse (111240222), we get a palindrome (333282333).

The spelling of 222042111 in words is "two hundred twenty-two million, forty-two thousand, one hundred eleven".