21211102210210 has 32 divisors (see below), whose sum is σ = 41837666959872. Its totient is φ = 7678540049280.

The previous prime is 21211102210157. The next prime is 21211102210219. The reversal of 21211102210210 is 1201220111212.

It is not an unprimeable number, because it can be changed into a prime (21211102210219) 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 15 ways as a sum of consecutive naturals, for example, 432325699 + ... + 432374758.

It is an arithmetic number, because the mean of its divisors is an integer number (1307427092496).

Almost surely, 2^{21211102210210} is an apocalyptic number.

21211102210210 is a deficient number, since it is larger than the sum of its proper divisors (20626564749662).

21211102210210 is a wasteful number, since it uses less digits than its factorization.

21211102210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864700698.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21211102210210 its reverse (1201220111212), we get a palindrome (22412322321422).

The spelling of 21211102210210 in words is "twenty-one trillion, two hundred eleven billion, one hundred two million, two hundred ten thousand, two hundred ten".