222421243 has 8 divisors (see below), whose sum is σ = 243420336. Its totient is φ = 201552000.

The previous prime is 222421237. The next prime is 222421289. The reversal of 222421243 is 342124222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222421243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222421643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28858 + ... + 35743.

It is an arithmetic number, because the mean of its divisors is an integer number (30427542).

Almost surely, 2^222421243 is an apocalyptic number.

222421243 is a deficient number, since it is larger than the sum of its proper divisors (20999093).

222421243 is a wasteful number, since it uses less digits than its factorization.

222421243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64925.

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

The square root of 222421243 is about 14913.7937158860. The cubic root of 222421243 is about 605.8876327000.

Adding to 222421243 its reverse (342124222), we get a palindrome (564545465).

The spelling of 222421243 in words is "two hundred twenty-two million, four hundred twenty-one thousand, two hundred forty-three".