It is a tau number, because it is divible by the number of its divisors (240).
It is an unprimeable number.
Almost surely, 22101021200 is an apocalyptic number.
2101021200 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 2101021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3759893280).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2101021200 is a wasteful number, since it uses less digits than its factorization.
2101021200 is an evil number, because the sum of its binary digits is even.
The square root of 2101021200 is about 45836.8978007893. The cubic root of 2101021200 is about 1280.7867071342.
Adding to 2101021200 its reverse (21201012), we get a palindrome (2122222212).
The spelling of 2101021200 in words is "two billion, one hundred one million, twenty-one thousand, two hundred".