100111001001043 has 2 divisors, whose sum is σ = 100111001001044. Its totient is φ = 100111001001042.

The previous prime is 100111001001031. The next prime is 100111001001049. The reversal of 100111001001043 is 340100100111001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100111001001043 is a prime.

It is not a weakly prime, because it can be changed into another prime (100111001001049) 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, 50055500500521 + 50055500500522.

It is an arithmetic number, because the mean of its divisors is an integer number (50055500500522).

Almost surely, 2^{100111001001043} is an apocalyptic number.

100111001001043 is a deficient number, since it is larger than the sum of its proper divisors (1).

100111001001043 is an equidigital number, since it uses as much as digits as its factorization.

100111001001043 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 100111001001043 its reverse (340100100111001), we get a palindrome (440211101112044).

The spelling of 100111001001043 in words is "one hundred trillion, one hundred eleven billion, one million, one thousand, forty-three".