522216163556221 has 4 divisors (see below), whose sum is σ = 522216304236000. Its totient is φ = 522216022876444.

The previous prime is 522216163556167. The next prime is 522216163556239. The reversal of 522216163556221 is 122655361612225.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 522216163556221 - 2¹⁷ = 522216163425149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522216163556251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64616521 + ... + 72247678.

It is an arithmetic number, because the mean of its divisors is an integer number (130554076059000).

Almost surely, 2^{522216163556221} is an apocalyptic number.

It is an amenable number.

522216163556221 is a deficient number, since it is larger than the sum of its proper divisors (140679779).

522216163556221 is a wasteful number, since it uses less digits than its factorization.

522216163556221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140679778.

The product of its digits is 2592000, while the sum is 49.

The spelling of 522216163556221 in words is "five hundred twenty-two trillion, two hundred sixteen billion, one hundred sixty-three million, five hundred fifty-six thousand, two hundred twenty-one".