243421222 has 8 divisors (see below), whose sum is σ = 398325672. Its totient is φ = 110646000.

The previous prime is 243421193. The next prime is 243421247. The reversal of 243421222 is 222124342.

243421222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 11064601 = 243421222 / (2 + 4 + 3 + 4 + 2 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 243421193 and 243421202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5532279 + ... + 5532322.

It is an arithmetic number, because the mean of its divisors is an integer number (49790709).

Almost surely, 2^243421222 is an apocalyptic number.

243421222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243421222 is a deficient number, since it is larger than the sum of its proper divisors (154904450).

243421222 is a wasteful number, since it uses less digits than its factorization.

243421222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11064614.

The product of its digits is 1536, while the sum is 22.

The square root of 243421222 is about 15601.9621201950. The cubic root of 243421222 is about 624.3855054724.

Adding to 243421222 its reverse (222124342), we get a palindrome (465545564).

The spelling of 243421222 in words is "two hundred forty-three million, four hundred twenty-one thousand, two hundred twenty-two".