144221120 has 28 divisors (see below), whose sum is σ = 343427304. Its totient is φ = 57688320.

The previous prime is 144221117. The next prime is 144221131. The reversal of 144221120 is 21122441.

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, 225026 + ... + 225665.

Almost surely, 2^144221120 is an apocalyptic number.

144221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144221120 is an abundant number, since it is smaller than the sum of its proper divisors (199206184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144221120 is an equidigital number, since it uses as much as digits as its factorization.

144221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450708 (or 450698 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 144221120 is about 12009.2097991500. The cubic root of 144221120 is about 524.4164279032.

Adding to 144221120 its reverse (21122441), we get a palindrome (165343561).

The spelling of 144221120 in words is "one hundred forty-four million, two hundred twenty-one thousand, one hundred twenty".