21035112 has 96 divisors (see below), whose sum is σ = 63256320. Its totient is φ = 5806080.

The previous prime is 21035111. The next prime is 21035123. The reversal of 21035112 is 21153012.

It is a junction number, because it is equal to n+sod(n) for n = 21035091 and 21035100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21035111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36168 + ... + 36744.

It is an arithmetic number, because the mean of its divisors is an integer number (658920).

Almost surely, 2^21035112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21035112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31628160).

21035112 is an abundant number, since it is smaller than the sum of its proper divisors (42221208).

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

21035112 is a wasteful number, since it uses less digits than its factorization.

21035112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 21035112 is about 4586.4051282023. The cubic root of 21035112 is about 276.0460960606.

Adding to 21035112 its reverse (21153012), we get a palindrome (42188124).

The spelling of 21035112 in words is "twenty-one million, thirty-five thousand, one hundred twelve".