12103104649 has 2 divisors, whose sum is σ = 12103104650. Its totient is φ = 12103104648.

The previous prime is 12103104647. The next prime is 12103104659. The reversal of 12103104649 is 94640130121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10039038025 + 2064066624 = 100195^2 + 45432^2 .

It is an emirp because it is prime and its reverse (94640130121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12103104649 - 2¹ = 12103104647 is a prime.

Together with 12103104647, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12103104649.

It is not a weakly prime, because it can be changed into another prime (12103104647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051552324 + 6051552325.

It is an arithmetic number, because the mean of its divisors is an integer number (6051552325).

Almost surely, 2^12103104649 is an apocalyptic number.

It is an amenable number.

12103104649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103104649 is an equidigital number, since it uses as much as digits as its factorization.

12103104649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 12103104649 in words is "twelve billion, one hundred three million, one hundred four thousand, six hundred forty-nine".