21113003099 has 4 divisors (see below), whose sum is σ = 21113357760. Its totient is φ = 21112648440.

The previous prime is 21113003063. The next prime is 21113003101. The reversal of 21113003099 is 99030031112.

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 21113003099 - 2⁸ = 21113002843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113003029) 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, 63812 + ... + 215169.

It is an arithmetic number, because the mean of its divisors is an integer number (5278339440).

Almost surely, 2^21113003099 is an apocalyptic number.

21113003099 is a deficient number, since it is larger than the sum of its proper divisors (354661).

21113003099 is an equidigital number, since it uses as much as digits as its factorization.

21113003099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354660.

The product of its (nonzero) digits is 1458, while the sum is 29.

The spelling of 21113003099 in words is "twenty-one billion, one hundred thirteen million, three thousand, ninety-nine".