100120323020420 has 24 divisors (see below), whose sum is σ = 211011713294424. Its totient is φ = 39903551122176.

The previous prime is 100120323020401. The next prime is 100120323020441. The reversal of 100120323020420 is 24020323021001.

It can be written as a sum of positive squares in 4 ways, for example, as 3285315751936 + 96835007268484 = 1812544^2 + 9840478^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 100120323020392 and 100120323020401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9036124697 + ... + 9036135776.

It is an arithmetic number, because the mean of its divisors is an integer number (8792154720601).

Almost surely, 2^{100120323020420} is an apocalyptic number.

100120323020420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100120323020420 is an abundant number, since it is smaller than the sum of its proper divisors (110891390274004).

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

100120323020420 is a wasteful number, since it uses less digits than its factorization.

100120323020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18072260759 (or 18072260757 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 100120323020420 its reverse (24020323021001), we get a palindrome (124140646041421).

The spelling of 100120323020420 in words is "one hundred trillion, one hundred twenty billion, three hundred twenty-three million, twenty thousand, four hundred twenty".