21214192 has 20 divisors (see below), whose sum is σ = 41231736. Its totient is φ = 10573760.

The previous prime is 21214187. The next prime is 21214229. The reversal of 21214192 is 29141212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3642 + ... + 7462.

Almost surely, 2^21214192 is an apocalyptic number.

It is an amenable number.

21214192 is a deficient number, since it is larger than the sum of its proper divisors (20017544).

21214192 is a wasteful number, since it uses less digits than its factorization.

21214192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4176 (or 4170 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

The square root of 21214192 is about 4605.8866681672. The cubic root of 21214192 is about 276.8272456948.

The spelling of 21214192 in words is "twenty-one million, two hundred fourteen thousand, one hundred ninety-two".