144221512 has 16 divisors (see below), whose sum is σ = 270691200. Its totient is φ = 72037200.

The previous prime is 144221503. The next prime is 144221513. The reversal of 144221512 is 215122441.

It is a super-2 number, since 2×144221512² = 41599689047132288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (144221513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 364 + ... + 16987.

It is an arithmetic number, because the mean of its divisors is an integer number (16918200).

Almost surely, 2^144221512 is an apocalyptic number.

It is an amenable number.

144221512 is a deficient number, since it is larger than the sum of its proper divisors (126469688).

144221512 is a wasteful number, since it uses less digits than its factorization.

144221512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18396 (or 18392 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 144221512 is about 12009.2261199463. The cubic root of 144221512 is about 524.4169030325.

Adding to 144221512 its reverse (215122441), we get a palindrome (359343953).

The spelling of 144221512 in words is "one hundred forty-four million, two hundred twenty-one thousand, five hundred twelve".