21324334113 has 12 divisors (see below), whose sum is σ = 30843847060. Its totient is φ = 14196823776.

The previous prime is 21324334111. The next prime is 21324334159. The reversal of 21324334113 is 31143342312.

It is a happy number.

21324334113 is a `hidden beast` number, since 2 + 1 + 3 + 243 + 3 + 411 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20962117089 + 362217024 = 144783^2 + 19032^2 .

It is not a de Polignac number, because 21324334113 - 2¹ = 21324334111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21324334111) 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, 1609618 + ... + 1622811.

Almost surely, 2^21324334113 is an apocalyptic number.

It is an amenable number.

21324334113 is a deficient number, since it is larger than the sum of its proper divisors (9519512947).

21324334113 is a wasteful number, since it uses less digits than its factorization.

21324334113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233168 (or 3233165 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 21324334113 its reverse (31143342312), we get a palindrome (52467676425).

The spelling of 21324334113 in words is "twenty-one billion, three hundred twenty-four million, three hundred thirty-four thousand, one hundred thirteen".