21101200100110 has 96 divisors (see below), whose sum is σ = 41722324188480. Its totient is φ = 7678818201600.

The previous prime is 21101200100051. The next prime is 21101200100179. The reversal of 21101200100110 is 1100100210112.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 364860676 + ... + 364918504.

It is an arithmetic number, because the mean of its divisors is an integer number (434607543630).

Almost surely, 2^{21101200100110} is an apocalyptic number.

21101200100110 is a deficient number, since it is larger than the sum of its proper divisors (20621124088370).

21101200100110 is a wasteful number, since it uses less digits than its factorization.

21101200100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60974 (or 60961 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21101200100110 its reverse (1100100210112), we get a palindrome (22201300310222).

The spelling of 21101200100110 in words is "twenty-one trillion, one hundred one billion, two hundred million, one hundred thousand, one hundred ten".