222222045 has 16 divisors (see below), whose sum is σ = 376470720. Its totient is φ = 111546624.

The previous prime is 222222031. The next prime is 222222061. The reversal of 222222045 is 540222222.

It is not a de Polignac number, because 222222045 - 2⁴ = 222222029 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 435475 + ... + 435984.

It is an arithmetic number, because the mean of its divisors is an integer number (23529420).

Almost surely, 2^222222045 is an apocalyptic number.

It is an amenable number.

222222045 is a deficient number, since it is larger than the sum of its proper divisors (154248675).

222222045 is a wasteful number, since it uses less digits than its factorization.

222222045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871484.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 222222045 is about 14907.1139057834. The cubic root of 222222045 is about 605.7067032603.

Adding to 222222045 its reverse (540222222), we get a palindrome (762444267).

The spelling of 222222045 in words is "two hundred twenty-two million, two hundred twenty-two thousand, forty-five".