1000001100503 has 2 divisors, whose sum is σ = 1000001100504. Its totient is φ = 1000001100502.

The previous prime is 1000001100487. The next prime is 1000001100523. The reversal of 1000001100503 is 3050011000001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1000001100503 - 2⁴ = 1000001100487 is a prime.

It is a super-2 number, since 2×1000001100503² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000001100523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500000550251 + 500000550252.

It is an arithmetic number, because the mean of its divisors is an integer number (500000550252).

Almost surely, 2^{1000001100503} is an apocalyptic number.

1000001100503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000001100503 is an equidigital number, since it uses as much as digits as its factorization.

1000001100503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15, while the sum is 11.

Adding to 1000001100503 its reverse (3050011000001), we get a palindrome (4050012100504).

The spelling of 1000001100503 in words is "one trillion, one million, one hundred thousand, five hundred three".