21113099 has 8 divisors (see below), whose sum is σ = 25548768. Its totient is φ = 17032320.

The previous prime is 21113089. The next prime is 21113101. The reversal of 21113099 is 99031112.

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 21113099 - 2⁴ = 21113083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113069) 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, 88592 + ... + 88829.

It is an arithmetic number, because the mean of its divisors is an integer number (3193596).

Almost surely, 2^21113099 is an apocalyptic number.

21113099 is a deficient number, since it is larger than the sum of its proper divisors (4435669).

21113099 is a wasteful number, since it uses less digits than its factorization.

21113099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177445.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 21113099 is about 4594.8992371977. The cubic root of 21113099 is about 276.3868193357.

The spelling of 21113099 in words is "twenty-one million, one hundred thirteen thousand, ninety-nine".