144020451221 has 2 divisors, whose sum is σ = 144020451222. Its totient is φ = 144020451220.

The previous prime is 144020451209. The next prime is 144020451241. The reversal of 144020451221 is 122154020441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110526327025 + 33494124196 = 332455^2 + 183014^2 .

It is a cyclic number.

It is not a de Polignac number, because 144020451221 - 2¹⁸ = 144020189077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144020451241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72010225610 + 72010225611.

It is an arithmetic number, because the mean of its divisors is an integer number (72010225611).

Almost surely, 2^144020451221 is an apocalyptic number.

It is an amenable number.

144020451221 is a deficient number, since it is larger than the sum of its proper divisors (1).

144020451221 is an equidigital number, since it uses as much as digits as its factorization.

144020451221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 26.

Adding to 144020451221 its reverse (122154020441), we get a palindrome (266174471662).

The spelling of 144020451221 in words is "one hundred forty-four billion, twenty million, four hundred fifty-one thousand, two hundred twenty-one".