522203346421 has 2 divisors, whose sum is σ = 522203346422. Its totient is φ = 522203346420.

The previous prime is 522203346403. The next prime is 522203346473. The reversal of 522203346421 is 124643302225.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 284073010225 + 238130336196 = 532985^2 + 487986^2 .

It is a cyclic number.

It is not a de Polignac number, because 522203346421 - 2³¹ = 520055862773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (522207346421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261101673210 + 261101673211.

It is an arithmetic number, because the mean of its divisors is an integer number (261101673211).

Almost surely, 2^522203346421 is an apocalyptic number.

It is an amenable number.

522203346421 is a deficient number, since it is larger than the sum of its proper divisors (1).

522203346421 is an equidigital number, since it uses as much as digits as its factorization.

522203346421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 522203346421 its reverse (124643302225), we get a palindrome (646846648646).

It can be divided in two parts, 522203 and 346421, that added together give a square (868624 = 932²).

The spelling of 522203346421 in words is "five hundred twenty-two billion, two hundred three million, three hundred forty-six thousand, four hundred twenty-one".