144220222 has 12 divisors (see below), whose sum is σ = 228316536. Its totient is φ = 68314500.

The previous prime is 144220207. The next prime is 144220273. The reversal of 144220222 is 222022441.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 144220222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 99154 + ... + 100597.

It is an arithmetic number, because the mean of its divisors is an integer number (19026378).

Almost surely, 2^144220222 is an apocalyptic number.

144220222 is a deficient number, since it is larger than the sum of its proper divisors (84096314).

144220222 is a wasteful number, since it uses less digits than its factorization.

144220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199791 (or 199772 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 144220222 is about 12009.1724111198. The cubic root of 144220222 is about 524.4153394659.

Adding to 144220222 its reverse (222022441), we get a palindrome (366242663).

The spelling of 144220222 in words is "one hundred forty-four million, two hundred twenty thousand, two hundred twenty-two".