1001100000203 has 2 divisors, whose sum is σ = 1001100000204. Its totient is φ = 1001100000202.

The previous prime is 1001100000143. The next prime is 1001100000211. The reversal of 1001100000203 is 3020000011001.

It is an a-pointer prime, because the next prime (1001100000211) can be obtained adding 1001100000203 to its sum of digits (8).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001100000203 - 2³⁰ = 1000026258379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001100008203) 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, 500550000101 + 500550000102.

It is an arithmetic number, because the mean of its divisors is an integer number (500550000102).

Almost surely, 2^{1001100000203} is an apocalyptic number.

1001100000203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001100000203 is an equidigital number, since it uses as much as digits as its factorization.

1001100000203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 1001100000203 its reverse (3020000011001), we get a palindrome (4021100011204).

The spelling of 1001100000203 in words is "one trillion, one billion, one hundred million, two hundred three", and thus it is an aban number.