1243102041011 has 2 divisors, whose sum is σ = 1243102041012. Its totient is φ = 1243102041010.

The previous prime is 1243102041001. The next prime is 1243102041061. The reversal of 1243102041011 is 1101402013421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243102041011 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1243102041001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621551020505 + 621551020506.

It is an arithmetic number, because the mean of its divisors is an integer number (621551020506).

Almost surely, 2^{1243102041011} is an apocalyptic number.

1243102041011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243102041011 is an equidigital number, since it uses as much as digits as its factorization.

1243102041011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1243102041011 its reverse (1101402013421), we get a palindrome (2344504054432).

The spelling of 1243102041011 in words is "one trillion, two hundred forty-three billion, one hundred two million, forty-one thousand, eleven".