2100001100202 has 64 divisors (see below), whose sum is σ = 4697425699200. Its totient is φ = 695388844800.

The previous prime is 2100001100147. The next prime is 2100001100209. The reversal of 2100001100202 is 2020011000012.

It is a super-2 number, since 2×2100001100202² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2100001100209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42441577 + ... + 42491027.

It is an arithmetic number, because the mean of its divisors is an integer number (73397276550).

Almost surely, 2^{2100001100202} is an apocalyptic number.

2100001100202 is an abundant number, since it is smaller than the sum of its proper divisors (2597424598998).

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

2100001100202 is a wasteful number, since it uses less digits than its factorization.

2100001100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54628 (or 54622 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 2100001100202 its reverse (2020011000012), we get a palindrome (4120012100214).

The spelling of 2100001100202 in words is "two trillion, one hundred billion, one million, one hundred thousand, two hundred two".