21304202234210 has 64 divisors (see below), whose sum is σ = 44431618113792. Its totient is φ = 7203350808576.

The previous prime is 21304202234209. The next prime is 21304202234239. The reversal of 21304202234210 is 1243220240312.

It is a super-2 number, since 2×21304202234210² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21304202234210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41868842 + ... + 42374618.

It is an arithmetic number, because the mean of its divisors is an integer number (694244033028).

Almost surely, 2^{21304202234210} is an apocalyptic number.

21304202234210 is an abundant number, since it is smaller than the sum of its proper divisors (23127415879582).

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

21304202234210 is a wasteful number, since it uses less digits than its factorization.

21304202234210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514107.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 21304202234210 its reverse (1243220240312), we get a palindrome (22547422474522).

The spelling of 21304202234210 in words is "twenty-one trillion, three hundred four billion, two hundred two million, two hundred thirty-four thousand, two hundred ten".