21102102110110 has 32 divisors (see below), whose sum is σ = 43410293260992. Its totient is φ = 7234963998720.

The previous prime is 21102102110099. The next prime is 21102102110119. The reversal of 21102102110110 is 1101120120112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102102110119) 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, 12591294 + ... + 14168446.

It is an arithmetic number, because the mean of its divisors is an integer number (1356571664406).

Almost surely, 2^{21102102110110} is an apocalyptic number.

21102102110110 is an abundant number, since it is smaller than the sum of its proper divisors (22308191150882).

21102102110110 is a wasteful number, since it uses less digits than its factorization.

21102102110110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768308.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21102102110110 its reverse (1101120120112), we get a palindrome (22203222230222).

The spelling of 21102102110110 in words is "twenty-one trillion, one hundred two billion, one hundred two million, one hundred ten thousand, one hundred ten".