144221222 has 8 divisors (see below), whose sum is σ = 218246616. Its totient is φ = 71472352.

The previous prime is 144221213. The next prime is 144221237. The reversal of 144221222 is 222122441.

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

It is a junction number, because it is equal to n+sod(n) for n = 144221194 and 144221203.

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, 318848 + ... + 319299.

It is an arithmetic number, because the mean of its divisors is an integer number (27280827).

Almost surely, 2^144221222 is an apocalyptic number.

144221222 is a deficient number, since it is larger than the sum of its proper divisors (74025394).

144221222 is a wasteful number, since it uses less digits than its factorization.

144221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638262.

The product of its digits is 512, while the sum is 20.

The square root of 144221222 is about 12009.2140458899. The cubic root of 144221222 is about 524.4165515338.

Adding to 144221222 its reverse (222122441), we get a palindrome (366343663).

The spelling of 144221222 in words is "one hundred forty-four million, two hundred twenty-one thousand, two hundred twenty-two".