21300111112 has 32 divisors (see below), whose sum is σ = 46268352000. Its totient is φ = 9003567744.

The previous prime is 21300111109. The next prime is 21300111143. The reversal of 21300111112 is 21111100312.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21300111092 and 21300111101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2601112 + ... + 2609287.

It is an arithmetic number, because the mean of its divisors is an integer number (1445886000).

Almost surely, 2^21300111112 is an apocalyptic number.

It is an amenable number.

21300111112 is an abundant number, since it is smaller than the sum of its proper divisors (24968240888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21300111112 is a wasteful number, since it uses less digits than its factorization.

21300111112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5210485 (or 5210481 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 21300111112 its reverse (21111100312), we get a palindrome (42411211424).

The spelling of 21300111112 in words is "twenty-one billion, three hundred million, one hundred eleven thousand, one hundred twelve".