21210030033210 has 96 divisors (see below), whose sum is σ = 55179329587200. Its totient is φ = 5652598790400.

The previous prime is 21210030033163. The next prime is 21210030033221. The reversal of 21210030033210 is 1233003001212.

21210030033210 is a `hidden beast` number, since 2 + 1 + 21 + 0 + 0 + 300 + 332 + 10 = 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 47 ways as a sum of consecutive naturals, for example, 1214004775 + ... + 1214022245.

It is an arithmetic number, because the mean of its divisors is an integer number (574784683200).

Almost surely, 2^{21210030033210} is an apocalyptic number.

21210030033210 is an abundant number, since it is smaller than the sum of its proper divisors (33969299553990).

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

21210030033210 is a wasteful number, since it uses less digits than its factorization.

21210030033210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24844 (or 24841 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21210030033210 its reverse (1233003001212), we get a palindrome (22443033034422).

The spelling of 21210030033210 in words is "twenty-one trillion, two hundred ten billion, thirty million, thirty-three thousand, two hundred ten".