222421246 has 4 divisors (see below), whose sum is σ = 333631872. Its totient is φ = 111210622.

The previous prime is 222421237. The next prime is 222421289. The reversal of 222421246 is 642124222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 642124222 = 2 ⋅321062111.

It is a self number, because there is not a number n which added to its sum of digits gives 222421246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605310 + ... + 55605313.

It is an arithmetic number, because the mean of its divisors is an integer number (83407968).

Almost surely, 2^222421246 is an apocalyptic number.

222421246 is a deficient number, since it is larger than the sum of its proper divisors (111210626).

222421246 is a wasteful number, since it uses less digits than its factorization.

222421246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111210625.

The product of its digits is 3072, while the sum is 25.

The square root of 222421246 is about 14913.7938164640. The cubic root of 222421246 is about 605.8876354240.

Adding to 222421246 its reverse (642124222), we get a palindrome (864545468).

The spelling of 222421246 in words is "two hundred twenty-two million, four hundred twenty-one thousand, two hundred forty-six".