21303022113 has 10 divisors (see below), whose sum is σ = 31823033154. Its totient is φ = 14202014688.

The previous prime is 21303022093. The next prime is 21303022127. The reversal of 21303022113 is 31122030312.

It can be written as a sum of positive squares in only one way, i.e., 17320402449 + 3982619664 = 131607^2 + 63108^2 .

It is not a de Polignac number, because 21303022113 - 2⁶ = 21303022049 is a prime.

It is a super-2 number, since 2×21303022113² (a number of 21 digits) contains 22 as substring.

21303022113 is a modest number, since divided by 22113 gives 21303 as remainder.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21303022183) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 131500056 + ... + 131500217.

Almost surely, 2^21303022113 is an apocalyptic number.

It is an amenable number.

21303022113 is a deficient number, since it is larger than the sum of its proper divisors (10520011041).

21303022113 is an equidigital number, since it uses as much as digits as its factorization.

21303022113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263000285 (or 263000276 counting only the distinct ones).

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

Adding to 21303022113 its reverse (31122030312), we get a palindrome (52425052425).

The spelling of 21303022113 in words is "twenty-one billion, three hundred three million, twenty-two thousand, one hundred thirteen".