100123110123 has 16 divisors (see below), whose sum is σ = 139329021696. Its totient is φ = 63834107040.

The previous prime is 100123110119. The next prime is 100123110149. The reversal of 100123110123 is 321011321001.

It is a happy number.

It is not a de Polignac number, because 100123110123 - 2² = 100123110119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100123110823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218988 + ... + 498198.

It is an arithmetic number, because the mean of its divisors is an integer number (8708063856).

Almost surely, 2^100123110123 is an apocalyptic number.

100123110123 is a deficient number, since it is larger than the sum of its proper divisors (39205911573).

100123110123 is a wasteful number, since it uses less digits than its factorization.

100123110123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284434.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 100123110123 its reverse (321011321001), we get a palindrome (421134431124).

The spelling of 100123110123 in words is "one hundred billion, one hundred twenty-three million, one hundred ten thousand, one hundred twenty-three".