210021323000 has 128 divisors (see below), whose sum is σ = 494016494400. Its totient is φ = 83571264000.

The previous prime is 210021322993. The next prime is 210021323011. The reversal of 210021323000 is 323120012.

It is a happy number.

210021323000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×210021323000² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 277438622 + ... + 277439378.

Almost surely, 2^210021323000 is an apocalyptic number.

210021323000 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 210021323000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247008247200).

210021323000 is an abundant number, since it is smaller than the sum of its proper divisors (283995171400).

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

210021323000 is a wasteful number, since it uses less digits than its factorization.

210021323000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1858 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 210021323000 its reverse (323120012), we get a palindrome (210344443012).

The spelling of 210021323000 in words is "two hundred ten billion, twenty-one million, three hundred twenty-three thousand".