20210002200100 has 18 divisors (see below), whose sum is σ = 43855704774434. Its totient is φ = 8084000880000.

The previous prime is 20210002200053. The next prime is 20210002200103. The reversal of 20210002200100 is 100220001202.

It can be written as a sum of positive squares in 3 ways, for example, as 7190259909156 + 13019742290944 = 2681466^2 + 3608288^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20210002200103) 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, 101050010901 + ... + 101050011100.

Almost surely, 2^{20210002200100} is an apocalyptic number.

20210002200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210002200100 is an abundant number, since it is smaller than the sum of its proper divisors (23645702574334).

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

20210002200100 is a wasteful number, since it uses less digits than its factorization.

20210002200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202100022015 (or 202100022008 counting only the distinct ones).

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

Adding to 20210002200100 its reverse (100220001202), we get a palindrome (20310222201302).

The spelling of 20210002200100 in words is "twenty trillion, two hundred ten billion, two million, two hundred thousand, one hundred".