522218225686366 has 12 divisors (see below), whose sum is σ = 861012694417176. Its totient is φ = 237371920766420.

The previous prime is 522218225686337. The next prime is 522218225686393. The reversal of 522218225686366 is 663686522812225.

It is a junction number, because it is equal to n+sod(n) for n = 522218225686298 and 522218225686307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1078963275970 + ... + 1078963276453.

It is an arithmetic number, because the mean of its divisors is an integer number (71751057868098).

Almost surely, 2^{522218225686366} is an apocalyptic number.

522218225686366 is a deficient number, since it is larger than the sum of its proper divisors (338794468730810).

522218225686366 is a wasteful number, since it uses less digits than its factorization.

522218225686366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2157926552447 (or 2157926552436 counting only the distinct ones).

The product of its digits is 199065600, while the sum is 64.

The spelling of 522218225686366 in words is "five hundred twenty-two trillion, two hundred eighteen billion, two hundred twenty-five million, six hundred eighty-six thousand, three hundred sixty-six".