21102111010110 has 48 divisors (see below), whose sum is σ = 54840515727024. Its totient is φ = 5194365785856.

The previous prime is 21102111010061. The next prime is 21102111010151. The reversal of 21102111010110 is 1101011120112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2081070967 + ... + 2081081106.

It is an arithmetic number, because the mean of its divisors is an integer number (1142510744313).

Almost surely, 2^{21102111010110} is an apocalyptic number.

21102111010110 is an abundant number, since it is smaller than the sum of its proper divisors (33738404716914).

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

21102111010110 is a wasteful number, since it uses less digits than its factorization.

21102111010110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4162152109 (or 4162152096 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 21102111010110 its reverse (1101011120112), we get a palindrome (22203122130222).

The spelling of 21102111010110 in words is "twenty-one trillion, one hundred two billion, one hundred eleven million, ten thousand, one hundred ten".