21169112 has 16 divisors (see below), whose sum is σ = 39870360. Its totient is φ = 10537024.

The previous prime is 21169091. The next prime is 21169121. The reversal of 21169112 is 21196112.

It is a happy number.

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, 4013 + ... + 7644.

Almost surely, 2^21169112 is an apocalyptic number.

It is an amenable number.

21169112 is a deficient number, since it is larger than the sum of its proper divisors (18701248).

21169112 is a wasteful number, since it uses less digits than its factorization.

21169112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11890 (or 11886 counting only the distinct ones).

The product of its digits is 216, while the sum is 23.

The square root of 21169112 is about 4600.9903281794. The cubic root of 21169112 is about 276.6310213589.

Subtracting 21169112 from its reverse (21196112), we obtain a cube (27000 = 30³).

The spelling of 21169112 in words is "twenty-one million, one hundred sixty-nine thousand, one hundred twelve".