210021011200 has 432 divisors, whose sum is σ = 697981326336. Its totient is φ = 60423782400.

The previous prime is 210021011149. The next prime is 210021011201. The reversal of 210021011200 is 2110120012.

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 (210021011201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6390009 + ... + 6422791.

Almost surely, 2^210021011200 is an apocalyptic number.

210021011200 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 210021011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348990663168).

210021011200 is an abundant number, since it is smaller than the sum of its proper divisors (487960315136).

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

210021011200 is a wasteful number, since it uses less digits than its factorization.

210021011200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32840 (or 32821 counting only the distinct ones).

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

Adding to 210021011200 its reverse (2110120012), we get a palindrome (212131131212).

The spelling of 210021011200 in words is "two hundred ten billion, twenty-one million, eleven thousand, two hundred".