210144201221401 has 2 divisors, whose sum is σ = 210144201221402. Its totient is φ = 210144201221400.

The previous prime is 210144201221377. The next prime is 210144201221477. The reversal of 210144201221401 is 104122102441012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190157480857600 + 19986720363801 = 13789760^2 + 4470651^2 .

It is a cyclic number.

It is not a de Polignac number, because 210144201221401 - 2¹¹ = 210144201219353 is a prime.

It is a super-3 number, since 3×210144201221401³ (a number of 44 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (210144201222401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105072100610700 + 105072100610701.

It is an arithmetic number, because the mean of its divisors is an integer number (105072100610701).

Almost surely, 2^{210144201221401} is an apocalyptic number.

It is an amenable number.

210144201221401 is a deficient number, since it is larger than the sum of its proper divisors (1).

210144201221401 is an equidigital number, since it uses as much as digits as its factorization.

210144201221401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1024, while the sum is 25.

Adding to 210144201221401 its reverse (104122102441012), we get a palindrome (314266303662413).

The spelling of 210144201221401 in words is "two hundred ten trillion, one hundred forty-four billion, two hundred one million, two hundred twenty-one thousand, four hundred one".