100500111 has 6 divisors (see below), whose sum is σ = 145166840. Its totient is φ = 67000068.

The previous prime is 100500019. The next prime is 100500121. The reversal of 100500111 is 111005001.

It is not a de Polignac number, because 100500111 - 2⁹ = 100499599 is a prime.

It is a super-2 number, since 2×100500111² = 20200544622024642, which contains 22 as substring.

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: 11166679 = 100500111 / (1 + 0 + 0 + 5 + 0 + 0 + 1 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100500093 and 100500102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100500121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5583331 + ... + 5583348.

Almost surely, 2^100500111 is an apocalyptic number.

100500111 is a deficient number, since it is larger than the sum of its proper divisors (44666729).

100500111 is a wasteful number, since it uses less digits than its factorization.

100500111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166685 (or 11166682 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

The square root of 100500111 is about 10024.9743640570. The cubic root of 100500111 is about 464.9313669082.

Adding to 100500111 its reverse (111005001), we get a palindrome (211505112).

It can be divided in two parts, 1005001 and 11, that multiplied together give a palindrome (11055011).

The spelling of 100500111 in words is "one hundred million, five hundred thousand, one hundred eleven".