21199336 has 16 divisors (see below), whose sum is σ = 40343040. Its totient is φ = 10441200.

The previous prime is 21199331. The next prime is 21199361. The reversal of 21199336 is 63399112.

It is not an unprimeable number, because it can be changed into a prime (21199331) by changing a digit.

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, 19240 + ... + 20311.

It is an arithmetic number, because the mean of its divisors is an integer number (2521440).

Almost surely, 2^21199336 is an apocalyptic number.

It is an amenable number.

21199336 is a deficient number, since it is larger than the sum of its proper divisors (19143704).

21199336 is a wasteful number, since it uses less digits than its factorization.

21199336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39624 (or 39620 counting only the distinct ones).

The product of its digits is 8748, while the sum is 34.

The square root of 21199336 is about 4604.2736669316. The cubic root of 21199336 is about 276.7626111973.

The spelling of 21199336 in words is "twenty-one million, one hundred ninety-nine thousand, three hundred thirty-six".