2001020202100 has 36 divisors (see below), whose sum is σ = 4364034052000. Its totient is φ = 796385921760.

The previous prime is 2001020202031. The next prime is 2001020202101. The reversal of 2001020202100 is 12020201002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001020202101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50256990 + ... + 50296789.

Almost surely, 2^{2001020202100} is an apocalyptic number.

2001020202100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2001020202100 is an abundant number, since it is smaller than the sum of its proper divisors (2363013849900).

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

2001020202100 is a wasteful number, since it uses less digits than its factorization.

2001020202100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100553992 (or 100553985 counting only the distinct ones).

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

Adding to 2001020202100 its reverse (12020201002), we get a palindrome (2013040403102).

The spelling of 2001020202100 in words is "two trillion, one billion, twenty million, two hundred two thousand, one hundred".