20200100200120 has 64 divisors (see below), whose sum is σ = 47293048955520. Its totient is φ = 7758914402304.

The previous prime is 20200100200013. The next prime is 20200100200129. The reversal of 20200100200120 is 2100200100202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20200100200097 and 20200100200106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200100200129) 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, 101265777 + ... + 101465056.

It is an arithmetic number, because the mean of its divisors is an integer number (738953889930).

Almost surely, 2^{20200100200120} is an apocalyptic number.

20200100200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200100200120 is an abundant number, since it is smaller than the sum of its proper divisors (27092948755400).

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

20200100200120 is a wasteful number, since it uses less digits than its factorization.

20200100200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202730944 (or 202730940 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20200100200120 its reverse (2100200100202), we get a palindrome (22300300300322).

The spelling of 20200100200120 in words is "twenty trillion, two hundred billion, one hundred million, two hundred thousand, one hundred twenty".