21203321130210 has 128 divisors (see below), whose sum is σ = 56050759468800. Its totient is φ = 5109408604160.

The previous prime is 21203321130197. The next prime is 21203321130221. The reversal of 21203321130210 is 1203112330212.

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 63 ways as a sum of consecutive naturals, for example, 1357131 + ... + 6651950.

It is an arithmetic number, because the mean of its divisors is an integer number (437896558350).

Almost surely, 2^{21203321130210} is an apocalyptic number.

21203321130210 is an abundant number, since it is smaller than the sum of its proper divisors (34847438338590).

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

21203321130210 is a wasteful number, since it uses less digits than its factorization.

21203321130210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8009316.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21203321130210 its reverse (1203112330212), we get a palindrome (22406433460422).

The spelling of 21203321130210 in words is "twenty-one trillion, two hundred three billion, three hundred twenty-one million, one hundred thirty thousand, two hundred ten".