222421443 has 16 divisors (see below), whose sum is σ = 302917536. Its totient is φ = 145117440.

The previous prime is 222421427. The next prime is 222421469. The reversal of 222421443 is 344124222.

It is not a de Polignac number, because 222421443 - 2⁴ = 222421427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222421483) 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 15 ways as a sum of consecutive naturals, for example, 71133 + ... + 74193.

It is an arithmetic number, because the mean of its divisors is an integer number (18932346).

Almost surely, 2^222421443 is an apocalyptic number.

222421443 is a deficient number, since it is larger than the sum of its proper divisors (80496093).

222421443 is a wasteful number, since it uses less digits than its factorization.

222421443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3574.

The product of its digits is 3072, while the sum is 24.

The square root of 222421443 is about 14913.8004210865. The cubic root of 222421443 is about 605.8878143036.

Adding to 222421443 its reverse (344124222), we get a palindrome (566545665).

The spelling of 222421443 in words is "two hundred twenty-two million, four hundred twenty-one thousand, four hundred forty-three".