21300000111 has 32 divisors (see below), whose sum is σ = 35981910720. Its totient is φ = 12336648192.

The previous prime is 21300000101. The next prime is 21300000119. The reversal of 21300000111 is 11100000312.

It is not a de Polignac number, because 21300000111 - 2⁹ = 21299999599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 21300000093 and 21300000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21300000119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1778850 + ... + 1790783.

It is an arithmetic number, because the mean of its divisors is an integer number (1124434710).

Almost surely, 2^21300000111 is an apocalyptic number.

21300000111 is a deficient number, since it is larger than the sum of its proper divisors (14681910609).

21300000111 is a wasteful number, since it uses less digits than its factorization.

21300000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569672 (or 3569666 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 21300000111 its reverse (11100000312), we get a palindrome (32400000423).

The spelling of 21300000111 in words is "twenty-one billion, three hundred million, one hundred eleven", and thus it is an aban number.