1211102449 has 2 divisors, whose sum is σ = 1211102450. Its totient is φ = 1211102448.

The previous prime is 1211102443. The next prime is 1211102471. The reversal of 1211102449 is 9442011121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1100116224 + 110986225 = 33168^2 + 10535^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211102449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211102443) 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, 605551224 + 605551225.

It is an arithmetic number, because the mean of its divisors is an integer number (605551225).

Almost surely, 2^1211102449 is an apocalyptic number.

It is an amenable number.

1211102449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211102449 is an equidigital number, since it uses as much as digits as its factorization.

1211102449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1211102449 is about 34800.8972441804. The cubic root of 1211102449 is about 1065.9257672120.

The spelling of 1211102449 in words is "one billion, two hundred eleven million, one hundred two thousand, four hundred forty-nine".