100001111503 has 2 divisors, whose sum is σ = 100001111504. Its totient is φ = 100001111502.

The previous prime is 100001111479. The next prime is 100001111519. The reversal of 100001111503 is 305111100001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100001111503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100001111563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000555751 + 50000555752.

It is an arithmetic number, because the mean of its divisors is an integer number (50000555752).

Almost surely, 2^100001111503 is an apocalyptic number.

100001111503 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001111503 is an equidigital number, since it uses as much as digits as its factorization.

100001111503 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 13.

Adding to 100001111503 its reverse (305111100001), we get a palindrome (405112211504).

The spelling of 100001111503 in words is "one hundred billion, one million, one hundred eleven thousand, five hundred three".