224505714301621 has 2 divisors, whose sum is σ = 224505714301622. Its totient is φ = 224505714301620.

The previous prime is 224505714301607. The next prime is 224505714301651. The reversal of 224505714301621 is 126103417505422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195764170980625 + 28741543320996 = 13991575^2 + 5361114^2 .

It is a cyclic number.

It is not a de Polignac number, because 224505714301621 - 2⁹ = 224505714301109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224505714301601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112252857150810 + 112252857150811.

It is an arithmetic number, because the mean of its divisors is an integer number (112252857150811).

Almost surely, 2^{224505714301621} is an apocalyptic number.

It is an amenable number.

224505714301621 is a deficient number, since it is larger than the sum of its proper divisors (1).

224505714301621 is an equidigital number, since it uses as much as digits as its factorization.

224505714301621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 224505714301621 in words is "two hundred twenty-four trillion, five hundred five billion, seven hundred fourteen million, three hundred one thousand, six hundred twenty-one".