144221101 has 2 divisors, whose sum is σ = 144221102. Its totient is φ = 144221100.

The previous prime is 144221069. The next prime is 144221107. The reversal of 144221101 is 101122441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140422500 + 3798601 = 11850^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 144221101 - 2⁵ = 144221069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144221107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72110550 + 72110551.

It is an arithmetic number, because the mean of its divisors is an integer number (72110551).

Almost surely, 2^144221101 is an apocalyptic number.

It is an amenable number.

144221101 is a deficient number, since it is larger than the sum of its proper divisors (1).

144221101 is an equidigital number, since it uses as much as digits as its factorization.

144221101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 144221101 is about 12009.2090080904. The cubic root of 144221101 is about 524.4164048739.

Adding to 144221101 its reverse (101122441), we get a palindrome (245343542).

The spelling of 144221101 in words is "one hundred forty-four million, two hundred twenty-one thousand, one hundred one".