21210231333330 has 96 divisors (see below), whose sum is σ = 59390957021760. Its totient is φ = 5220777006720.

The previous prime is 21210231333311. The next prime is 21210231333413. The reversal of 21210231333330 is 3333313201212.

21210231333330 is a `hidden beast` number, since 2 + 1 + 2 + 10 + 2 + 313 + 3 + 3 + 330 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21210231333294 and 21210231333303.

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, 30936181 + ... + 31614359.

It is an arithmetic number, because the mean of its divisors is an integer number (618655802310).

Almost surely, 2^{21210231333330} is an apocalyptic number.

21210231333330 is an abundant number, since it is smaller than the sum of its proper divisors (38180725688430).

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

21210231333330 is a wasteful number, since it uses less digits than its factorization.

21210231333330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704936 (or 704933 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 27.

Adding to 21210231333330 its reverse (3333313201212), we get a palindrome (24543544534542).

The spelling of 21210231333330 in words is "twenty-one trillion, two hundred ten billion, two hundred thirty-one million, three hundred thirty-three thousand, three hundred thirty".