218522367241 has 2 divisors, whose sum is σ = 218522367242. Its totient is φ = 218522367240.

The previous prime is 218522367227. The next prime is 218522367253. The reversal of 218522367241 is 142763225812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217547616400 + 974750841 = 466420^2 + 31221^2 .

It is a cyclic number.

It is not a de Polignac number, because 218522367241 - 2¹⁹ = 218521842953 is a prime.

It is a super-2 number, since 2×218522367241² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (218522367341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109261183620 + 109261183621.

It is an arithmetic number, because the mean of its divisors is an integer number (109261183621).

Almost surely, 2^218522367241 is an apocalyptic number.

It is an amenable number.

218522367241 is a deficient number, since it is larger than the sum of its proper divisors (1).

218522367241 is an equidigital number, since it uses as much as digits as its factorization.

218522367241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The spelling of 218522367241 in words is "two hundred eighteen billion, five hundred twenty-two million, three hundred sixty-seven thousand, two hundred forty-one".