21325112 has 32 divisors (see below), whose sum is σ = 41180400. Its totient is φ = 10348800.

The previous prime is 21325099. The next prime is 21325147. The reversal of 21325112 is 21152312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43187 + ... + 43677.

Almost surely, 2^21325112 is an apocalyptic number.

It is an amenable number.

21325112 is a deficient number, since it is larger than the sum of its proper divisors (19855288).

21325112 is a wasteful number, since it uses less digits than its factorization.

21325112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 643 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 21325112 is about 4617.9120823160. The cubic root of 21325112 is about 277.3088779492.

Adding to 21325112 its reverse (21152312), we get a palindrome (42477424).

The spelling of 21325112 in words is "twenty-one million, three hundred twenty-five thousand, one hundred twelve".