100002100043 has 2 divisors, whose sum is σ = 100002100044. Its totient is φ = 100002100042.

The previous prime is 100002099971. The next prime is 100002100049. The reversal of 100002100043 is 340001200001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100002100043 - 2⁸ = 100002099787 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100002099997 and 100002100033.

It is not a weakly prime, because it can be changed into another prime (100002100049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50001050021 + 50001050022.

It is an arithmetic number, because the mean of its divisors is an integer number (50001050022).

Almost surely, 2^100002100043 is an apocalyptic number.

100002100043 is a deficient number, since it is larger than the sum of its proper divisors (1).

100002100043 is an equidigital number, since it uses as much as digits as its factorization.

100002100043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 100002100043 its reverse (340001200001), we get a palindrome (440003300044).

The spelling of 100002100043 in words is "one hundred billion, two million, one hundred thousand, forty-three".