100123310123 has 4 divisors (see below), whose sum is σ = 100129368048. Its totient is φ = 100117252200.

The previous prime is 100123310083. The next prime is 100123310137. The reversal of 100123310123 is 321013321001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321013321001 = 2207 ⋅145452343.

It is a cyclic number.

It is not a de Polignac number, because 100123310123 - 2²² = 100119115819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100123310723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3004103 + ... + 3037248.

It is an arithmetic number, because the mean of its divisors is an integer number (25032342012).

Almost surely, 2^100123310123 is an apocalyptic number.

100123310123 is a deficient number, since it is larger than the sum of its proper divisors (6057925).

100123310123 is an equidigital number, since it uses as much as digits as its factorization.

100123310123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6057924.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 100123310123 its reverse (321013321001), we get a palindrome (421136631124).

The spelling of 100123310123 in words is "one hundred billion, one hundred twenty-three million, three hundred ten thousand, one hundred twenty-three".