21202310113 has 4 divisors (see below), whose sum is σ = 21408157888. Its totient is φ = 20996462340.

The previous prime is 21202310099. The next prime is 21202310123. The reversal of 21202310113 is 31101320212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21202310113 - 2¹⁷ = 21202179041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21202310123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102923733 + ... + 102923938.

It is an arithmetic number, because the mean of its divisors is an integer number (5352039472).

Almost surely, 2^21202310113 is an apocalyptic number.

It is an amenable number.

21202310113 is a deficient number, since it is larger than the sum of its proper divisors (205847775).

21202310113 is a wasteful number, since it uses less digits than its factorization.

21202310113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205847774.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21202310113 its reverse (31101320212), we get a palindrome (52303630325).

The spelling of 21202310113 in words is "twenty-one billion, two hundred two million, three hundred ten thousand, one hundred thirteen".