144812221331 has 4 divisors (see below), whose sum is σ = 145107155064. Its totient is φ = 144517287600.

The previous prime is 144812221319. The next prime is 144812221357. The reversal of 144812221331 is 133122218441.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144812221331 - 2¹⁴ = 144812204947 is a prime.

It is a super-2 number, since 2×144812221331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144812221361) 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, 147466130 + ... + 147467111.

It is an arithmetic number, because the mean of its divisors is an integer number (36276788766).

Almost surely, 2^144812221331 is an apocalyptic number.

144812221331 is a deficient number, since it is larger than the sum of its proper divisors (294933733).

144812221331 is an equidigital number, since it uses as much as digits as its factorization.

144812221331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294933732.

The product of its digits is 9216, while the sum is 32.

Adding to 144812221331 its reverse (133122218441), we get a palindrome (277934439772).

The spelling of 144812221331 in words is "one hundred forty-four billion, eight hundred twelve million, two hundred twenty-one thousand, three hundred thirty-one".