21302000111 has 4 divisors (see below), whose sum is σ = 24345142992. Its totient is φ = 18258857232.

The previous prime is 21302000077. The next prime is 21302000113. The reversal of 21302000111 is 11100020312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 21302000111 - 2¹⁰ = 21301999087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21302000092 and 21302000101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302000113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521571430 + ... + 1521571443.

It is an arithmetic number, because the mean of its divisors is an integer number (6086285748).

Almost surely, 2^21302000111 is an apocalyptic number.

21302000111 is a deficient number, since it is larger than the sum of its proper divisors (3043142881).

21302000111 is an equidigital number, since it uses as much as digits as its factorization.

21302000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043142880.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 21302000111 its reverse (11100020312), we get a palindrome (32402020423).

The spelling of 21302000111 in words is "twenty-one billion, three hundred two million, one hundred eleven", and thus it is an aban number.