20002101200 has 60 divisors (see below), whose sum is σ = 48256345920. Its totient is φ = 7967326080.

The previous prime is 20002101191. The next prime is 20002101209. The reversal of 20002101200 is 210120002.

It is an interprime number because it is at equal distance from previous prime (20002101191) and next prime (20002101209).

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002101209) 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, 9014 + ... + 200213.

It is an arithmetic number, because the mean of its divisors is an integer number (804272432).

Almost surely, 2^20002101200 is an apocalyptic number.

20002101200 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 20002101200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24128172960).

20002101200 is an abundant number, since it is smaller than the sum of its proper divisors (28254244720).

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

20002101200 is a wasteful number, since it uses less digits than its factorization.

20002101200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209484 (or 209473 counting only the distinct ones).

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

Adding to 20002101200 its reverse (210120002), we get a palindrome (20212221202).

The spelling of 20002101200 in words is "twenty billion, two million, one hundred one thousand, two hundred".