210021002200 has 96 divisors (see below), whose sum is σ = 519474407760. Its totient is φ = 78691737600.

The previous prime is 210021002161. The next prime is 210021002201. The reversal of 210021002200 is 2200120012.

210021002200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (210021002201) 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, 571024 + ... + 863776.

Almost surely, 2^210021002200 is an apocalyptic number.

210021002200 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 210021002200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259737203880).

210021002200 is an abundant number, since it is smaller than the sum of its proper divisors (309453405560).

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

210021002200 is a wasteful number, since it uses less digits than its factorization.

210021002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292997 (or 292988 counting only the distinct ones).

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

Adding to 210021002200 its reverse (2200120012), we get a palindrome (212221122212).

The spelling of 210021002200 in words is "two hundred ten billion, twenty-one million, two thousand, two hundred".