210021210012330 has 128 divisors (see below), whose sum is σ = 567160151040000. Its totient is φ = 55295332582464.

The previous prime is 210021210012293. The next prime is 210021210012389. The reversal of 210021210012330 is 33210012120012.

210021210012330 is a `hidden beast` number, since 2 + 10 + 0 + 212 + 100 + 12 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1060833891 + ... + 1061031849.

It is an arithmetic number, because the mean of its divisors is an integer number (4430938680000).

Almost surely, 2^{210021210012330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210021210012330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283580075520000).

210021210012330 is an abundant number, since it is smaller than the sum of its proper divisors (357138941027670).

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

210021210012330 is a wasteful number, since it uses less digits than its factorization.

210021210012330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247793 (or 247787 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 210021210012330 its reverse (33210012120012), we get a palindrome (243231222132342).

The spelling of 210021210012330 in words is "two hundred ten trillion, twenty-one billion, two hundred ten million, twelve thousand, three hundred thirty".