21102300112 has 20 divisors (see below), whose sum is σ = 40903577316. Its totient is φ = 10546538240.

The previous prime is 21102300103. The next prime is 21102300113. The reversal of 21102300112 is 21100320112.

It can be written as a sum of positive squares in 2 ways, for example, as 6407041936 + 14695258176 = 80044^2 + 121224^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21102300092 and 21102300101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102300113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250339 + ... + 323842.

Almost surely, 2^21102300112 is an apocalyptic number.

It is an amenable number.

21102300112 is a deficient number, since it is larger than the sum of its proper divisors (19801277204).

21102300112 is a wasteful number, since it uses less digits than its factorization.

21102300112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576486 (or 576480 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 21102300112 its reverse (21100320112), we get a palindrome (42202620224).

The spelling of 21102300112 in words is "twenty-one billion, one hundred two million, three hundred thousand, one hundred twelve".