144311221 has 8 divisors (see below), whose sum is σ = 150685920. Its totient is φ = 138029808.

The previous prime is 144311201. The next prime is 144311239. The reversal of 144311221 is 122113441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144311221 - 2⁷ = 144311093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144311201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20151 + ... + 26356.

It is an arithmetic number, because the mean of its divisors is an integer number (18835740).

Almost surely, 2^144311221 is an apocalyptic number.

It is an amenable number.

144311221 is a deficient number, since it is larger than the sum of its proper divisors (6374699).

144311221 is a wasteful number, since it uses less digits than its factorization.

144311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46643.

The product of its digits is 192, while the sum is 19.

The square root of 144311221 is about 12012.9605426806. The cubic root of 144311221 is about 524.5256135023.

Adding to 144311221 its reverse (122113441), we get a palindrome (266424662).

The spelling of 144311221 in words is "one hundred forty-four million, three hundred eleven thousand, two hundred twenty-one".