12205311563 has 2 divisors, whose sum is σ = 12205311564. Its totient is φ = 12205311562.

The previous prime is 12205311553. The next prime is 12205311589. The reversal of 12205311563 is 36511350221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12205311563 - 2⁶ = 12205311499 is a prime.

It is not a weakly prime, because it can be changed into another prime (12205311553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6102655781 + 6102655782.

It is an arithmetic number, because the mean of its divisors is an integer number (6102655782).

Almost surely, 2^12205311563 is an apocalyptic number.

12205311563 is a deficient number, since it is larger than the sum of its proper divisors (1).

12205311563 is an equidigital number, since it uses as much as digits as its factorization.

12205311563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 12205311563 its reverse (36511350221), we get a palindrome (48716661784).

The spelling of 12205311563 in words is "twelve billion, two hundred five million, three hundred eleven thousand, five hundred sixty-three".