100123101320 has 64 divisors (see below), whose sum is σ = 247322203200. Its totient is φ = 36176474880.

The previous prime is 100123101319. The next prime is 100123101409. The reversal of 100123101320 is 23101321001.

It is a junction number, because it is equal to n+sod(n) for n = 100123101295 and 100123101304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 655610 + ... + 793769.

It is an arithmetic number, because the mean of its divisors is an integer number (3864409425).

Almost surely, 2^100123101320 is an apocalyptic number.

100123101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100123101320 is an abundant number, since it is smaller than the sum of its proper divisors (147199101880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100123101320 is a wasteful number, since it uses less digits than its factorization.

100123101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449558 (or 1449554 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 100123101320 its reverse (23101321001), we get a palindrome (123224422321).

The spelling of 100123101320 in words is "one hundred billion, one hundred twenty-three million, one hundred one thousand, three hundred twenty".