12216303577 has 2 divisors, whose sum is σ = 12216303578. Its totient is φ = 12216303576.

The previous prime is 12216303557. The next prime is 12216303611. The reversal of 12216303577 is 77530361221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8022964041 + 4193339536 = 89571^2 + 64756^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12216303577 is a prime.

It is not a weakly prime, because it can be changed into another prime (12216303557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6108151788 + 6108151789.

It is an arithmetic number, because the mean of its divisors is an integer number (6108151789).

Almost surely, 2^12216303577 is an apocalyptic number.

It is an amenable number.

12216303577 is a deficient number, since it is larger than the sum of its proper divisors (1).

12216303577 is an equidigital number, since it uses as much as digits as its factorization.

12216303577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

Adding to 12216303577 its reverse (77530361221), we get a palindrome (89746664798).

The spelling of 12216303577 in words is "twelve billion, two hundred sixteen million, three hundred three thousand, five hundred seventy-seven".