21412112 has 20 divisors (see below), whose sum is σ = 43926876. Its totient is φ = 10076160.

The previous prime is 21412099. The next prime is 21412123. The reversal of 21412112 is 21121412.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14776336 + 6635776 = 3844^2 + 2576^2 .

It is a nude number because it is divisible by every one of its digits.

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, 39089 + ... + 39632.

Almost surely, 2^21412112 is an apocalyptic number.

It is an amenable number.

21412112 is an abundant number, since it is smaller than the sum of its proper divisors (22514764).

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

21412112 is a wasteful number, since it uses less digits than its factorization.

21412112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78746 (or 78740 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 21412112 is about 4627.3223358655. The cubic root of 21412112 is about 277.6854783595.

Adding to 21412112 its reverse (21121412), we get a palindrome (42533524).

The spelling of 21412112 in words is "twenty-one million, four hundred twelve thousand, one hundred twelve".