21001300122303 has 12 divisors (see below), whose sum is σ = 30335268054000. Its totient is φ = 14000840548416.

The previous prime is 21001300122289. The next prime is 21001300122317. The reversal of 21001300122303 is 30322100310012.

21001300122303 is a `hidden beast` number, since 210 + 0 + 1 + 30 + 0 + 122 + 303 = 666.

It is an interprime number because it is at equal distance from previous prime (21001300122289) and next prime (21001300122317).

It is not a de Polignac number, because 21001300122303 - 2²² = 21001295927999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21001300122203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3738823 + ... + 7482071.

It is an arithmetic number, because the mean of its divisors is an integer number (2527939004500).

Almost surely, 2^{21001300122303} is an apocalyptic number.

21001300122303 is a deficient number, since it is larger than the sum of its proper divisors (9333967931697).

21001300122303 is a wasteful number, since it uses less digits than its factorization.

21001300122303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366638 (or 4366635 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21001300122303 its reverse (30322100310012), we get a palindrome (51323400432315).

The spelling of 21001300122303 in words is "twenty-one trillion, one billion, three hundred million, one hundred twenty-two thousand, three hundred three".