222042005 has 4 divisors (see below), whose sum is σ = 266450412. Its totient is φ = 177633600.

The previous prime is 222042001. The next prime is 222042043. The reversal of 222042005 is 500240222.

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 49434961 + 172607044 = 7031^2 + 13138^2 .

It is not a de Polignac number, because 222042005 - 2² = 222042001 is a prime.

It is a super-3 number, since 3×222042005³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222042001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22204196 + ... + 22204205.

It is an arithmetic number, because the mean of its divisors is an integer number (66612603).

Almost surely, 2^222042005 is an apocalyptic number.

It is an amenable number.

222042005 is a deficient number, since it is larger than the sum of its proper divisors (44408407).

222042005 is an equidigital number, since it uses as much as digits as its factorization.

222042005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44408406.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 222042005 is about 14901.0739545846. The cubic root of 222042005 is about 605.5430817819.

Adding to 222042005 its reverse (500240222), we get a palindrome (722282227).

The spelling of 222042005 in words is "two hundred twenty-two million, forty-two thousand, five".