100012123 has 8 divisors (see below), whose sum is σ = 101908656. Its totient is φ = 98124000.

The previous prime is 100012111. The next prime is 100012153. The reversal of 100012123 is 321210001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100012123 - 2²⁵ = 66457691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100012103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25173 + ... + 28873.

It is an arithmetic number, because the mean of its divisors is an integer number (12738582).

Almost surely, 2^100012123 is an apocalyptic number.

100012123 is a deficient number, since it is larger than the sum of its proper divisors (1896533).

100012123 is an equidigital number, since it uses as much as digits as its factorization.

100012123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4205.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 100012123 is about 10000.6061316302. The cubic root of 100012123 is about 464.1776392638.

Adding to 100012123 its reverse (321210001), we get a palindrome (421222124).

The spelling of 100012123 in words is "one hundred million, twelve thousand, one hundred twenty-three".