12263228981 has 2 divisors, whose sum is σ = 12263228982. Its totient is φ = 12263228980.

The previous prime is 12263228963. The next prime is 12263229007. The reversal of 12263228981 is 18982236221.

12263228981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8909660881 + 3353568100 = 94391^2 + 57910^2 .

It is a cyclic number.

It is not a de Polignac number, because 12263228981 - 2¹⁰ = 12263227957 is a prime.

It is a super-2 number, since 2×12263228981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12263228281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6131614490 + 6131614491.

It is an arithmetic number, because the mean of its divisors is an integer number (6131614491).

Almost surely, 2^12263228981 is an apocalyptic number.

It is an amenable number.

12263228981 is a deficient number, since it is larger than the sum of its proper divisors (1).

12263228981 is an equidigital number, since it uses as much as digits as its factorization.

12263228981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The spelling of 12263228981 in words is "twelve billion, two hundred sixty-three million, two hundred twenty-eight thousand, nine hundred eighty-one".