21300000093 has 12 divisors (see below), whose sum is σ = 30768174268. Its totient is φ = 14199304320.

The previous prime is 21300000091. The next prime is 21300000101. The reversal of 21300000093 is 39000000312.

It can be written as a sum of positive squares in 2 ways, for example, as 9147583449 + 12152416644 = 95643^2 + 110238^2 .

It is not a de Polignac number, because 21300000093 - 2¹ = 21300000091 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 (21300000091) 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 11 ways as a sum of consecutive naturals, for example, 193173 + ... + 282693.

Almost surely, 2^21300000093 is an apocalyptic number.

It is an amenable number.

21300000093 is a deficient number, since it is larger than the sum of its proper divisors (9468174175).

21300000093 is a wasteful number, since it uses less digits than its factorization.

21300000093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115964 (or 115961 counting only the distinct ones).

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

The spelling of 21300000093 in words is "twenty-one billion, three hundred million, ninety-three", and thus it is an aban number.