21300021303 has 16 divisors (see below), whose sum is σ = 30986706432. Its totient is φ = 12907080000.

The previous prime is 21300021283. The next prime is 21300021331. The reversal of 21300021303 is 30312000312.

It is not a de Polignac number, because 21300021303 - 2¹⁴ = 21300004919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300021343) 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 15 ways as a sum of consecutive naturals, for example, 178578 + ... + 272928.

It is an arithmetic number, because the mean of its divisors is an integer number (1936669152).

Almost surely, 2^21300021303 is an apocalyptic number.

21300021303 is a deficient number, since it is larger than the sum of its proper divisors (9686685129).

21300021303 is a wasteful number, since it uses less digits than its factorization.

21300021303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101206.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21300021303 its reverse (30312000312), we get a palindrome (51612021615).

The spelling of 21300021303 in words is "twenty-one billion, three hundred million, twenty-one thousand, three hundred three".