222345100 has 18 divisors (see below), whose sum is σ = 482489084. Its totient is φ = 88938000.

The previous prime is 222345089. The next prime is 222345103. The reversal of 222345100 is 1543222.

It is not an unprimeable number, because it can be changed into a prime (222345103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111626 + ... + 1111825.

Almost surely, 2^222345100 is an apocalyptic number.

222345100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222345100 is an abundant number, since it is smaller than the sum of its proper divisors (260143984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222345100 is a wasteful number, since it uses less digits than its factorization.

222345100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223465 (or 2223458 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 222345100 is about 14911.2407263782. The cubic root of 222345100 is about 605.8184855764.

Adding to 222345100 its reverse (1543222), we get a palindrome (223888322).

The spelling of 222345100 in words is "two hundred twenty-two million, three hundred forty-five thousand, one hundred".