21110706112 has 28 divisors (see below), whose sum is σ = 42421840480. Its totient is φ = 10421738496.

The previous prime is 21110706109. The next prime is 21110706157. The reversal of 21110706112 is 21160701112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082633 + ... + 2092744.

Almost surely, 2^21110706112 is an apocalyptic number.

It is an amenable number.

21110706112 is an abundant number, since it is smaller than the sum of its proper divisors (21311134368).

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

21110706112 is an equidigital number, since it uses as much as digits as its factorization.

21110706112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175468 (or 4175458 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 22.

Multiplying 21110706112 by its sum of digits (22), we get a palindrome (464435534464).

Subtracting 21110706112 from its reverse (21160701112), we obtain a triangular number (49995000 = T₉₉₉₉).

The spelling of 21110706112 in words is "twenty-one billion, one hundred ten million, seven hundred six thousand, one hundred twelve".