144221132 has 96 divisors (see below), whose sum is σ = 310915584. Its totient is φ = 57728000.

The previous prime is 144221131. The next prime is 144221167. The reversal of 144221132 is 231122441.

It is a super-2 number, since 2×144221132² = 41599469830722848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144221131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1427882 + ... + 1427982.

It is an arithmetic number, because the mean of its divisors is an integer number (3238704).

Almost surely, 2^144221132 is an apocalyptic number.

It is an amenable number.

144221132 is an abundant number, since it is smaller than the sum of its proper divisors (166694452).

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

144221132 is a wasteful number, since it uses less digits than its factorization.

144221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 237 counting only the distinct ones).

The product of its digits is 384, while the sum is 20.

The square root of 144221132 is about 12009.2102987665. The cubic root of 144221132 is about 524.4164424479.

Adding to 144221132 its reverse (231122441), we get a palindrome (375343573).

The spelling of 144221132 in words is "one hundred forty-four million, two hundred twenty-one thousand, one hundred thirty-two".