21103110299 has 2 divisors, whose sum is σ = 21103110300. Its totient is φ = 21103110298.

The previous prime is 21103110289. The next prime is 21103110317. The reversal of 21103110299 is 99201130112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21103110299 - 2²⁰ = 21102061723 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (21103110289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551555149 + 10551555150.

It is an arithmetic number, because the mean of its divisors is an integer number (10551555150).

Almost surely, 2^21103110299 is an apocalyptic number.

21103110299 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103110299 is an equidigital number, since it uses as much as digits as its factorization.

21103110299 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 29.

The spelling of 21103110299 in words is "twenty-one billion, one hundred three million, one hundred ten thousand, two hundred ninety-nine".