144432220334221 has 4 divisors (see below), whose sum is σ = 144432374541952. Its totient is φ = 144432066126492.

The previous prime is 144432220334191. The next prime is 144432220334257. The reversal of 144432220334221 is 122433022234441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144432220334221 - 2²⁵ = 144432186779789 is a prime.

It is a super-2 number, since 2×144432220334221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144432220334821) 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, 75690315 + ... + 77575048.

It is an arithmetic number, because the mean of its divisors is an integer number (36108093635488).

Almost surely, 2^{144432220334221} is an apocalyptic number.

It is an amenable number.

144432220334221 is a deficient number, since it is larger than the sum of its proper divisors (154207731).

144432220334221 is an equidigital number, since it uses as much as digits as its factorization.

144432220334221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154207730.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 144432220334221 its reverse (122433022234441), we get a palindrome (266865242568662).

The spelling of 144432220334221 in words is "one hundred forty-four trillion, four hundred thirty-two billion, two hundred twenty million, three hundred thirty-four thousand, two hundred twenty-one".