21300442111 has 12 divisors (see below), whose sum is σ = 24421742352. Its totient is φ = 18505358976.

The previous prime is 21300442109. The next prime is 21300442123. The reversal of 21300442111 is 11124400312.

It is not a de Polignac number, because 21300442111 - 2¹ = 21300442109 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 (21300442211) 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, 3704131 + ... + 3709876.

It is an arithmetic number, because the mean of its divisors is an integer number (2035145196).

Almost surely, 2^21300442111 is an apocalyptic number.

21300442111 is a deficient number, since it is larger than the sum of its proper divisors (3121300241).

21300442111 is a wasteful number, since it uses less digits than its factorization.

21300442111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7414050 (or 7414037 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21300442111 its reverse (11124400312), we get a palindrome (32424842423).

The spelling of 21300442111 in words is "twenty-one billion, three hundred million, four hundred forty-two thousand, one hundred eleven".