20200111102100 has 18 divisors (see below), whose sum is σ = 43834241091774. Its totient is φ = 8080044440800.

The previous prime is 20200111102057. The next prime is 20200111102109. The reversal of 20200111102100 is 120111100202.

It can be written as a sum of positive squares in 3 ways, for example, as 1488707455876 + 18711403646224 = 1220126^2 + 4325668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200111102109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101000555411 + ... + 101000555610.

Almost surely, 2^{20200111102100} is an apocalyptic number.

20200111102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200111102100 is an abundant number, since it is smaller than the sum of its proper divisors (23634129989674).

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

20200111102100 is a wasteful number, since it uses less digits than its factorization.

20200111102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202001111035 (or 202001111028 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20200111102100 its reverse (120111100202), we get a palindrome (20320222202302).

The spelling of 20200111102100 in words is "twenty trillion, two hundred billion, one hundred eleven million, one hundred two thousand, one hundred".