144212021 has 2 divisors, whose sum is σ = 144212022. Its totient is φ = 144212020.

The previous prime is 144212009. The next prime is 144212053. The reversal of 144212021 is 120212441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87796900 + 56415121 = 9370^2 + 7511^2 .

It is a cyclic number.

It is not a de Polignac number, because 144212021 - 2¹⁴ = 144195637 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144202021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72106010 + 72106011.

It is an arithmetic number, because the mean of its divisors is an integer number (72106011).

Almost surely, 2^144212021 is an apocalyptic number.

It is an amenable number.

144212021 is a deficient number, since it is larger than the sum of its proper divisors (1).

144212021 is an equidigital number, since it uses as much as digits as its factorization.

144212021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 144212021 is about 12008.8309589235. The cubic root of 144212021 is about 524.4053990852.

Adding to 144212021 its reverse (120212441), we get a palindrome (264424462).

The spelling of 144212021 in words is "one hundred forty-four million, two hundred twelve thousand, twenty-one".