562021223416421 has 2 divisors, whose sum is σ = 562021223416422. Its totient is φ = 562021223416420.

The previous prime is 562021223416351. The next prime is 562021223416559. The reversal of 562021223416421 is 124614322120265.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 498089285311396 + 63931938105025 = 22317914^2 + 7995745^2 .

It is a cyclic number.

It is not a de Polignac number, because 562021223416421 - 2²⁶ = 562021156307557 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (562021223416921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281010611708210 + 281010611708211.

It is an arithmetic number, because the mean of its divisors is an integer number (281010611708211).

Almost surely, 2^{562021223416421} is an apocalyptic number.

It is an amenable number.

562021223416421 is a deficient number, since it is larger than the sum of its proper divisors (1).

562021223416421 is an equidigital number, since it uses as much as digits as its factorization.

562021223416421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 41.

Adding to 562021223416421 its reverse (124614322120265), we get a palindrome (686635545536686).

The spelling of 562021223416421 in words is "five hundred sixty-two trillion, twenty-one billion, two hundred twenty-three million, four hundred sixteen thousand, four hundred twenty-one".