21036112 has 20 divisors (see below), whose sum is σ = 41032096. Its totient is φ = 10447200.

The previous prime is 21036083. The next prime is 21036131. The reversal of 21036112 is 21163012.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 1938 + ... + 6769.

Almost surely, 2^21036112 is an apocalyptic number.

It is an amenable number.

21036112 is a deficient number, since it is larger than the sum of its proper divisors (19995984).

21036112 is a wasteful number, since it uses less digits than its factorization.

21036112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8866 (or 8860 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 21036112 is about 4586.5141447509. The cubic root of 21036112 is about 276.0504703614.

Adding to 21036112 its reverse (21163012), we get a palindrome (42199124).

The spelling of 21036112 in words is "twenty-one million, thirty-six thousand, one hundred twelve".