656213226301 has 2 divisors, whose sum is σ = 656213226302. Its totient is φ = 656213226300.

The previous prime is 656213226287. The next prime is 656213226341. The reversal of 656213226301 is 103622312656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395552944900 + 260660281401 = 628930^2 + 510549^2 .

It is a cyclic number.

It is not a de Polignac number, because 656213226301 - 2²¹ = 656211129149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (656213226341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328106613150 + 328106613151.

It is an arithmetic number, because the mean of its divisors is an integer number (328106613151).

Almost surely, 2^656213226301 is an apocalyptic number.

It is an amenable number.

656213226301 is a deficient number, since it is larger than the sum of its proper divisors (1).

656213226301 is an equidigital number, since it uses as much as digits as its factorization.

656213226301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

Adding to 656213226301 its reverse (103622312656), we get a palindrome (759835538957).

The spelling of 656213226301 in words is "six hundred fifty-six billion, two hundred thirteen million, two hundred twenty-six thousand, three hundred one".