21213302331210 has 128 divisors (see below), whose sum is σ = 56572727685120. Its totient is φ = 5047386220800.

The previous prime is 21213302331209. The next prime is 21213302331253. The reversal of 21213302331210 is 1213320331212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8182161 + ... + 10458219.

It is an arithmetic number, because the mean of its divisors is an integer number (441974435040).

Almost surely, 2^{21213302331210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21213302331210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28286363842560).

21213302331210 is an abundant number, since it is smaller than the sum of its proper divisors (35359425353910).

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

21213302331210 is a wasteful number, since it uses less digits than its factorization.

21213302331210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276604.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21213302331210 its reverse (1213320331212), we get a palindrome (22426622662422).

It can be divided in two parts, 21213302 and 331210, that added together give a palindrome (21544512).

The spelling of 21213302331210 in words is "twenty-one trillion, two hundred thirteen billion, three hundred two million, three hundred thirty-one thousand, two hundred ten".