21314099 has 4 divisors (see below), whose sum is σ = 21521136. Its totient is φ = 21107064.

The previous prime is 21314087. The next prime is 21314149. The reversal of 21314099 is 99041312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21314099 - 2²⁰ = 20265523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21314299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103364 + ... + 103569.

It is an arithmetic number, because the mean of its divisors is an integer number (5380284).

Almost surely, 2^21314099 is an apocalyptic number.

21314099 is a deficient number, since it is larger than the sum of its proper divisors (207037).

21314099 is a wasteful number, since it uses less digits than its factorization.

21314099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207036.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 21314099 is about 4616.7195063161. The cubic root of 21314099 is about 277.2611325406.

The spelling of 21314099 in words is "twenty-one million, three hundred fourteen thousand, ninety-nine".