21310202110211 has 32 divisors (see below), whose sum is σ = 24507457708032. Its totient is φ = 18151565231520.

The previous prime is 21310202110163. The next prime is 21310202110297. The reversal of 21310202110211 is 11201120201312.

It is a happy number.

It is not a de Polignac number, because 21310202110211 - 2⁴² = 16912155599107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21310202110211.

It is not an unprimeable number, because it can be changed into a prime (21310202112211) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2965100360 + ... + 2965107546.

It is an arithmetic number, because the mean of its divisors is an integer number (765858053376).

Almost surely, 2^{21310202110211} is an apocalyptic number.

21310202110211 is a deficient number, since it is larger than the sum of its proper divisors (3197255597821).

21310202110211 is a wasteful number, since it uses less digits than its factorization.

21310202110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11279.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21310202110211 its reverse (11201120201312), we get a palindrome (32511322311523).

The spelling of 21310202110211 in words is "twenty-one trillion, three hundred ten billion, two hundred two million, one hundred ten thousand, two hundred eleven".