144304221155 has 4 divisors (see below), whose sum is σ = 173165065392. Its totient is φ = 115443376920.

The previous prime is 144304221143. The next prime is 144304221157. The reversal of 144304221155 is 551122403441.

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

It is not a de Polignac number, because 144304221155 - 2⁸ = 144304220899 is a prime.

It is a super-2 number, since 2×144304221155² (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 (144304221157) 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, 14430422111 + ... + 14430422120.

It is an arithmetic number, because the mean of its divisors is an integer number (43291266348).

Almost surely, 2^144304221155 is an apocalyptic number.

144304221155 is a deficient number, since it is larger than the sum of its proper divisors (28860844237).

144304221155 is an equidigital number, since it uses as much as digits as its factorization.

144304221155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28860844236.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 144304221155 its reverse (551122403441), we get a palindrome (695426624596).

The spelling of 144304221155 in words is "one hundred forty-four billion, three hundred four million, two hundred twenty-one thousand, one hundred fifty-five".