21113013299 has 4 divisors (see below), whose sum is σ = 24129158064. Its totient is φ = 18096868536.

The previous prime is 21113013281. The next prime is 21113013301. The reversal of 21113013299 is 99231031112.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21113013299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21113013799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1508072372 + ... + 1508072385.

It is an arithmetic number, because the mean of its divisors is an integer number (6032289516).

Almost surely, 2^21113013299 is an apocalyptic number.

21113013299 is a deficient number, since it is larger than the sum of its proper divisors (3016144765).

21113013299 is an equidigital number, since it uses as much as digits as its factorization.

21113013299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3016144764.

The product of its (nonzero) digits is 2916, while the sum is 32.

The spelling of 21113013299 in words is "twenty-one billion, one hundred thirteen million, thirteen thousand, two hundred ninety-nine".