100123104220 has 24 divisors (see below), whose sum is σ = 210281879808. Its totient is φ = 40044792000.

The previous prime is 100123104209. The next prime is 100123104241. The reversal of 100123104220 is 22401321001.

It is a junction number, because it is equal to n+sod(n) for n = 100123104194 and 100123104203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90511 + ... + 456550.

It is an arithmetic number, because the mean of its divisors is an integer number (8761744992).

Almost surely, 2^100123104220 is an apocalyptic number.

100123104220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100123104220 is an abundant number, since it is smaller than the sum of its proper divisors (110158775588).

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

100123104220 is a wasteful number, since it uses less digits than its factorization.

100123104220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556221 (or 556219 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 100123104220 its reverse (22401321001), we get a palindrome (122524425221).

The spelling of 100123104220 in words is "one hundred billion, one hundred twenty-three million, one hundred four thousand, two hundred twenty".