21224104001297 has 2 divisors, whose sum is σ = 21224104001298. Its totient is φ = 21224104001296.

The previous prime is 21224104001267. The next prime is 21224104001311. The reversal of 21224104001297 is 79210040142212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18487729669696 + 2736374331601 = 4299736^2 + 1654199^2 .

It is a cyclic number.

It is not a de Polignac number, because 21224104001297 - 2⁸ = 21224104001041 is a prime.

It is not a weakly prime, because it can be changed into another prime (21224104001267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10612052000648 + 10612052000649.

It is an arithmetic number, because the mean of its divisors is an integer number (10612052000649).

Almost surely, 2^{21224104001297} is an apocalyptic number.

It is an amenable number.

21224104001297 is a deficient number, since it is larger than the sum of its proper divisors (1).

21224104001297 is an equidigital number, since it uses as much as digits as its factorization.

21224104001297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 35.

The spelling of 21224104001297 in words is "twenty-one trillion, two hundred twenty-four billion, one hundred four million, one thousand, two hundred ninety-seven".