21303200101 has 4 divisors (see below), whose sum is σ = 21360313612. Its totient is φ = 21246086592.

The previous prime is 21303200099. The next prime is 21303200117. The reversal of 21303200101 is 10100230312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15407263876 + 5895936225 = 124126^2 + 76785^2 .

It is a cyclic number.

It is not a de Polignac number, because 21303200101 - 2¹ = 21303200099 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 (21303200801) 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 3 ways as a sum of consecutive naturals, for example, 28556196 + ... + 28556941.

It is an arithmetic number, because the mean of its divisors is an integer number (5340078403).

Almost surely, 2^21303200101 is an apocalyptic number.

It is an amenable number.

21303200101 is a deficient number, since it is larger than the sum of its proper divisors (57113511).

21303200101 is an equidigital number, since it uses as much as digits as its factorization.

21303200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57113510.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21303200101 its reverse (10100230312), we get a palindrome (31403430413).

The spelling of 21303200101 in words is "twenty-one billion, three hundred three million, two hundred thousand, one hundred one".