21112102210210 has 96 divisors (see below), whose sum is σ = 43007835416832. Its totient is φ = 7399880463360.

The previous prime is 21112102210201. The next prime is 21112102210379. The reversal of 21112102210210 is 1201220121112.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54666007 + ... + 55050853.

It is an arithmetic number, because the mean of its divisors is an integer number (447998285592).

Almost surely, 2^{21112102210210} is an apocalyptic number.

21112102210210 is an abundant number, since it is smaller than the sum of its proper divisors (21895733206622).

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

21112102210210 is a wasteful number, since it uses less digits than its factorization.

21112102210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385516 (or 385487 counting only the distinct ones).

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

Adding to 21112102210210 its reverse (1201220121112), we get a palindrome (22313322331322).

It can be divided in two parts, 21112102 and 210210, that added together give a palindrome (21322312).

The spelling of 21112102210210 in words is "twenty-one trillion, one hundred twelve billion, one hundred two million, two hundred ten thousand, two hundred ten".