21465112 has 8 divisors (see below), whose sum is σ = 40247100. Its totient is φ = 10732552.

The previous prime is 21465071. The next prime is 21465121. The reversal of 21465112 is 21156412.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1341562 + ... + 1341577.

Almost surely, 2^21465112 is an apocalyptic number.

It is an amenable number.

21465112 is a deficient number, since it is larger than the sum of its proper divisors (18781988).

21465112 is a wasteful number, since it uses less digits than its factorization.

21465112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683145 (or 2683141 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 21465112 is about 4633.0456505413. The cubic root of 21465112 is about 277.9144018161.

The spelling of 21465112 in words is "twenty-one million, four hundred sixty-five thousand, one hundred twelve".