21112310300 has 72 divisors (see below), whose sum is σ = 47441598960. Its totient is φ = 8145446400.

The previous prime is 21112310299. The next prime is 21112310309. The reversal of 21112310300 is 301321112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112310309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3392792 + ... + 3399008.

Almost surely, 2^21112310300 is an apocalyptic number.

21112310300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112310300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23720799480).

21112310300 is an abundant number, since it is smaller than the sum of its proper divisors (26329288660).

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

21112310300 is a wasteful number, since it uses less digits than its factorization.

21112310300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7431 (or 7424 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21112310300 its reverse (301321112), we get a palindrome (21413631412).

The spelling of 21112310300 in words is "twenty-one billion, one hundred twelve million, three hundred ten thousand, three hundred".