21300099 has 8 divisors (see below), whose sum is σ = 30070800. Its totient is φ = 13364736.

The previous prime is 21300089. The next prime is 21300101. The reversal of 21300099 is 99000312.

It is a happy number.

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

It is not a de Polignac number, because 21300099 - 2⁸ = 21299843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21300029) 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, 208774 + ... + 208875.

It is an arithmetic number, because the mean of its divisors is an integer number (3758850).

Almost surely, 2^21300099 is an apocalyptic number.

21300099 is a deficient number, since it is larger than the sum of its proper divisors (8770701).

21300099 is a wasteful number, since it uses less digits than its factorization.

21300099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417669.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 21300099 is about 4615.2030291202. The cubic root of 21300099 is about 277.2004136390.

The spelling of 21300099 in words is "twenty-one million, three hundred thousand, ninety-nine".