522221430664164 has 144 divisors (see below), whose sum is σ = 1546390047847680. Its totient is φ = 135635610277440.

The previous prime is 522221430664117. The next prime is 522221430664187. The reversal of 522221430664164 is 461466034122225.

It is a happy number.

It is a super-2 number, since 2×522221430664164² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137754627 + ... + 141494805.

It is an arithmetic number, because the mean of its divisors is an integer number (10738819776720).

Almost surely, 2^{522221430664164} is an apocalyptic number.

It is an amenable number.

522221430664164 is an abundant number, since it is smaller than the sum of its proper divisors (1024168617183516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

522221430664164 is a wasteful number, since it uses less digits than its factorization.

522221430664164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3761798 (or 3761789 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

Adding to 522221430664164 its reverse (461466034122225), we get a palindrome (983687464786389).

The spelling of 522221430664164 in words is "five hundred twenty-two trillion, two hundred twenty-one billion, four hundred thirty million, six hundred sixty-four thousand, one hundred sixty-four".