100000203111 has 6 divisors (see below), whose sum is σ = 144444737840. Its totient is φ = 66666802068.

The previous prime is 100000203101. The next prime is 100000203157. The reversal of 100000203111 is 111302000001.

It is not a de Polignac number, because 100000203111 - 2⁶ = 100000203047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 11111133679 = 100000203111 / (1 + 0 + 0 + 0 + 0 + 0 + 2 + 0 + 3 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100000203093 and 100000203102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000203101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5555566831 + ... + 5555566848.

Almost surely, 2^100000203111 is an apocalyptic number.

100000203111 is a deficient number, since it is larger than the sum of its proper divisors (44444534729).

100000203111 is a wasteful number, since it uses less digits than its factorization.

100000203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11111133685 (or 11111133682 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 100000203111 its reverse (111302000001), we get a palindrome (211302203112).

The spelling of 100000203111 in words is "one hundred billion, two hundred three thousand, one hundred eleven".