20001020210200 has 96 divisors (see below), whose sum is σ = 49242039825600. Its totient is φ = 7529148323840.

The previous prime is 20001020210191. The next prime is 20001020210203. The reversal of 20001020210200 is 201202010002.

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 (20001020210203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40243617 + ... + 40737583.

It is an arithmetic number, because the mean of its divisors is an integer number (512937914850).

Almost surely, 2^{20001020210200} is an apocalyptic number.

20001020210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001020210200 is an abundant number, since it is smaller than the sum of its proper divisors (29241019615400).

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

20001020210200 is a wasteful number, since it uses less digits than its factorization.

20001020210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505909 (or 505900 counting only the distinct ones).

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

Adding to 20001020210200 its reverse (201202010002), we get a palindrome (20202222220202).

The spelling of 20001020210200 in words is "twenty trillion, one billion, twenty million, two hundred ten thousand, two hundred".