21100132110 has 16 divisors (see below), whose sum is σ = 50640317136. Its totient is φ = 5626701888.

The previous prime is 21100132103. The next prime is 21100132133. The reversal of 21100132110 is 1123100112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351668839 + ... + 351668898.

It is an arithmetic number, because the mean of its divisors is an integer number (3165019821).

Almost surely, 2^21100132110 is an apocalyptic number.

21100132110 is an abundant number, since it is smaller than the sum of its proper divisors (29540185026).

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

21100132110 is a wasteful number, since it uses less digits than its factorization.

21100132110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703337747.

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

Adding to 21100132110 its reverse (1123100112), we get a palindrome (22223232222).

The spelling of 21100132110 in words is "twenty-one billion, one hundred million, one hundred thirty-two thousand, one hundred ten".