21000303065199 has 4 divisors (see below), whose sum is σ = 28000404086936. Its totient is φ = 14000202043464.

The previous prime is 21000303065191. The next prime is 21000303065201. The reversal of 21000303065199 is 99156030300012.

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

It is not a de Polignac number, because 21000303065199 - 2³ = 21000303065191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000303065191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3500050510864 + ... + 3500050510869.

It is an arithmetic number, because the mean of its divisors is an integer number (7000101021734).

Almost surely, 2^{21000303065199} is an apocalyptic number.

21000303065199 is a deficient number, since it is larger than the sum of its proper divisors (7000101021737).

21000303065199 is an equidigital number, since it uses as much as digits as its factorization.

21000303065199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000101021736.

The product of its (nonzero) digits is 43740, while the sum is 39.

The spelling of 21000303065199 in words is "twenty-one trillion, three hundred three million, sixty-five thousand, one hundred ninety-nine".