20101100210200 has 96 divisors (see below), whose sum is σ = 47008756872000. Its totient is φ = 7993464192000.

The previous prime is 20101100210183. The next prime is 20101100210209. The reversal of 20101100210200 is 201200110102.

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 (20101100210209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28377946 + ... + 29077654.

It is an arithmetic number, because the mean of its divisors is an integer number (489674550750).

Almost surely, 2^{20101100210200} is an apocalyptic number.

20101100210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20101100210200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23504378436000).

20101100210200 is an abundant number, since it is smaller than the sum of its proper divisors (26907656661800).

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

20101100210200 is a wasteful number, since it uses less digits than its factorization.

20101100210200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700565 (or 700556 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20101100210200 its reverse (201200110102), we get a palindrome (20302300320302).

The spelling of 20101100210200 in words is "twenty trillion, one hundred one billion, one hundred million, two hundred ten thousand, two hundred".