21336107 has 8 divisors (see below), whose sum is σ = 24186960. Its totient is φ = 18658080.

The previous prime is 21336103. The next prime is 21336131. The reversal of 21336107 is 70163312.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21336107 - 2² = 21336103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21336103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42944 + ... + 43437.

It is an arithmetic number, because the mean of its divisors is an integer number (3023370).

Almost surely, 2^21336107 is an apocalyptic number.

21336107 is a deficient number, since it is larger than the sum of its proper divisors (2850853).

21336107 is a wasteful number, since it uses less digits than its factorization.

21336107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86413.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 21336107 is about 4619.1024019824. The cubic root of 21336107 is about 277.3565289260.

Adding to 21336107 its reverse (70163312), we get a palindrome (91499419).

The spelling of 21336107 in words is "twenty-one million, three hundred thirty-six thousand, one hundred seven".