100011123 has 12 divisors (see below), whose sum is σ = 145327728. Its totient is φ = 66273840.

The previous prime is 100011113. The next prime is 100011137. The reversal of 100011123 is 321110001.

It is not a de Polignac number, because 100011123 - 2⁵ = 100011091 is a prime.

It is a super-2 number, since 2×100011123² = 20004449447442258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (100011113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31768 + ... + 34773.

It is an arithmetic number, because the mean of its divisors is an integer number (12110644).

Almost surely, 2^100011123 is an apocalyptic number.

100011123 is a deficient number, since it is larger than the sum of its proper divisors (45316605).

100011123 is a wasteful number, since it uses less digits than its factorization.

100011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66714 (or 66711 counting only the distinct ones).

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

The square root of 100011123 is about 10000.5561345357. The cubic root of 100011123 is about 464.1760921874.

Adding to 100011123 its reverse (321110001), we get a palindrome (421121124).

The spelling of 100011123 in words is "one hundred million, eleven thousand, one hundred twenty-three".