1111100001043 has 2 divisors, whose sum is σ = 1111100001044. Its totient is φ = 1111100001042.

The previous prime is 1111100001041. The next prime is 1111100001071. The reversal of 1111100001043 is 3401000011111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1111100001043 - 2¹ = 1111100001041 is a prime.

Together with 1111100001041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1111100001041) 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, 555550000521 + 555550000522.

It is an arithmetic number, because the mean of its divisors is an integer number (555550000522).

Almost surely, 2^{1111100001043} is an apocalyptic number.

1111100001043 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111100001043 is an equidigital number, since it uses as much as digits as its factorization.

1111100001043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1111100001043 its reverse (3401000011111), we get a palindrome (4512100012154).

The spelling of 1111100001043 in words is "one trillion, one hundred eleven billion, one hundred million, one thousand, forty-three".