144221200324020 has 72 divisors (see below), whose sum is σ = 463204561050504. Its totient is φ = 36196693413888.

The previous prime is 144221200323989. The next prime is 144221200324049. The reversal of 144221200324020 is 20423002122441.

It is a happy number.

144221200324020 is a `hidden beast` number, since 1 + 4 + 4 + 2 + 21 + 200 + 32 + 402 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22870795004964 + 121350405319056 = 4782342^2 + 11015916^2 .

It is a super-2 number, since 2×144221200324020² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23565552549 + ... + 23565558668.

It is an arithmetic number, because the mean of its divisors is an integer number (6433396681257).

Almost surely, 2^{144221200324020} is an apocalyptic number.

144221200324020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144221200324020 is an abundant number, since it is smaller than the sum of its proper divisors (318983360726484).

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

144221200324020 is a wasteful number, since it uses less digits than its factorization.

144221200324020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47131111249 (or 47131111244 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 144221200324020 its reverse (20423002122441), we get a palindrome (164644202446461).

The spelling of 144221200324020 in words is "one hundred forty-four trillion, two hundred twenty-one billion, two hundred million, three hundred twenty-four thousand, twenty".