21203103001299 has 4 divisors (see below), whose sum is σ = 28270804001736. Its totient is φ = 14135402000864.

The previous prime is 21203103001247. The next prime is 21203103001313. The reversal of 21203103001299 is 99210030130212.

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 21203103001299 - 2¹¹ = 21203102999251 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21203103001499) 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, 3533850500214 + ... + 3533850500219.

It is an arithmetic number, because the mean of its divisors is an integer number (7067701000434).

Almost surely, 2^{21203103001299} is an apocalyptic number.

21203103001299 is a deficient number, since it is larger than the sum of its proper divisors (7067701000437).

21203103001299 is an equidigital number, since it uses as much as digits as its factorization.

21203103001299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067701000436.

The product of its (nonzero) digits is 5832, while the sum is 33.

The spelling of 21203103001299 in words is "twenty-one trillion, two hundred three billion, one hundred three million, one thousand, two hundred ninety-nine".