21303301113 has 12 divisors (see below), whose sum is σ = 30773227108. Its totient is φ = 14201373600.

The previous prime is 21303301111. The next prime is 21303301237. The reversal of 21303301113 is 31110330312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2425365504 + 18877935609 = 49248^2 + 137397^2 .

It is not a de Polignac number, because 21303301113 - 2¹ = 21303301111 is a prime.

It is a super-2 number, since 2×21303301113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303301111) 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, 122031 + ... + 239787.

Almost surely, 2^21303301113 is an apocalyptic number.

It is an amenable number.

21303301113 is a deficient number, since it is larger than the sum of its proper divisors (9469925995).

21303301113 is a wasteful number, since it uses less digits than its factorization.

21303301113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137864 (or 137861 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21303301113 its reverse (31110330312), we get a palindrome (52413631425).

The spelling of 21303301113 in words is "twenty-one billion, three hundred three million, three hundred one thousand, one hundred thirteen".