221655006321341 has 2 divisors, whose sum is σ = 221655006321342. Its totient is φ = 221655006321340.

The previous prime is 221655006321317. The next prime is 221655006321449. The reversal of 221655006321341 is 143123600556122.

221655006321341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129813642429241 + 91841363892100 = 11393579^2 + 9583390^2 .

It is a cyclic number.

It is not a de Polignac number, because 221655006321341 - 2²⁶ = 221654939212477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221655006321041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110827503160670 + 110827503160671.

It is an arithmetic number, because the mean of its divisors is an integer number (110827503160671).

Almost surely, 2^{221655006321341} is an apocalyptic number.

It is an amenable number.

221655006321341 is a deficient number, since it is larger than the sum of its proper divisors (1).

221655006321341 is an equidigital number, since it uses as much as digits as its factorization.

221655006321341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 259200, while the sum is 41.

Adding to 221655006321341 its reverse (143123600556122), we get a palindrome (364778606877463).

The spelling of 221655006321341 in words is "two hundred twenty-one trillion, six hundred fifty-five billion, six million, three hundred twenty-one thousand, three hundred forty-one".