210144213244321 has 2 divisors, whose sum is σ = 210144213244322. Its totient is φ = 210144213244320.

The previous prime is 210144213244307. The next prime is 210144213244327. The reversal of 210144213244321 is 123442312441012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170989909368721 + 39154303875600 = 13076311^2 + 6257340^2 .

It is a cyclic number.

It is not a de Polignac number, because 210144213244321 - 2¹³ = 210144213236129 is a prime.

It is not a weakly prime, because it can be changed into another prime (210144213244327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072106622160 + 105072106622161.

It is an arithmetic number, because the mean of its divisors is an integer number (105072106622161).

Almost surely, 2^{210144213244321} is an apocalyptic number.

It is an amenable number.

210144213244321 is a deficient number, since it is larger than the sum of its proper divisors (1).

210144213244321 is an equidigital number, since it uses as much as digits as its factorization.

210144213244321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36864, while the sum is 34.

Adding to 210144213244321 its reverse (123442312441012), we get a palindrome (333586525685333).

The spelling of 210144213244321 in words is "two hundred ten trillion, one hundred forty-four billion, two hundred thirteen million, two hundred forty-four thousand, three hundred twenty-one".