21110134200100 has 36 divisors (see below), whose sum is σ = 49973444963568. Its totient is φ = 7676412436000.

The previous prime is 21110134200037. The next prime is 21110134200109. The reversal of 21110134200100 is 100243101112.

It is not an unprimeable number, because it can be changed into a prime (21110134200109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9595514446 + ... + 9595516645.

It is an arithmetic number, because the mean of its divisors is an integer number (1388151248988).

Almost surely, 2^{21110134200100} is an apocalyptic number.

21110134200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21110134200100 is an abundant number, since it is smaller than the sum of its proper divisors (28863310763468).

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

21110134200100 is a wasteful number, since it uses less digits than its factorization.

21110134200100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19191031116 (or 19191031109 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21110134200100 its reverse (100243101112), we get a palindrome (21210377301212).

The spelling of 21110134200100 in words is "twenty-one trillion, one hundred ten billion, one hundred thirty-four million, two hundred thousand, one hundred".