21224452141201 has 2 divisors, whose sum is σ = 21224452141202. Its totient is φ = 21224452141200.

The previous prime is 21224452141121. The next prime is 21224452141213. The reversal of 21224452141201 is 10214125442212.

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., 17153480088976 + 4070972052225 = 4141676^2 + 2017665^2 .

It is a cyclic number.

It is not a de Polignac number, because 21224452141201 - 2⁴³ = 12428359118993 is a prime.

It is not a weakly prime, because it can be changed into another prime (21224452441201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612226070600 + 10612226070601.

It is an arithmetic number, because the mean of its divisors is an integer number (10612226070601).

Almost surely, 2^{21224452141201} is an apocalyptic number.

It is an amenable number.

21224452141201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21224452141201 is an equidigital number, since it uses as much as digits as its factorization.

21224452141201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 21224452141201 its reverse (10214125442212), we get a palindrome (31438577583413).

The spelling of 21224452141201 in words is "twenty-one trillion, two hundred twenty-four billion, four hundred fifty-two million, one hundred forty-one thousand, two hundred one".