21102122102110 has 32 divisors (see below), whose sum is σ = 43583028314112. Its totient is φ = 7206188532000.

The previous prime is 21102122102071. The next prime is 21102122102119. The reversal of 21102122102110 is 1120122120112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102122102119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600498142 + ... + 600533281.

It is an arithmetic number, because the mean of its divisors is an integer number (1361969634816).

Almost surely, 2^{21102122102110} is an apocalyptic number.

21102122102110 is an abundant number, since it is smaller than the sum of its proper divisors (22480906212002).

21102122102110 is a wasteful number, since it uses less digits than its factorization.

21102122102110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201031688.

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

Adding to 21102122102110 its reverse (1120122120112), we get a palindrome (22222244222222).

The spelling of 21102122102110 in words is "twenty-one trillion, one hundred two billion, one hundred twenty-two million, one hundred two thousand, one hundred ten".