21112331300 has 72 divisors (see below), whose sum is σ = 46873666560. Its totient is φ = 8251776000.

The previous prime is 21112331299. The next prime is 21112331311. The reversal of 21112331300 is 313321112.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 752525 + ... + 780075.

Almost surely, 2^21112331300 is an apocalyptic number.

21112331300 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 21112331300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23436833280).

21112331300 is an abundant number, since it is smaller than the sum of its proper divisors (25761335260).

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

21112331300 is a wasteful number, since it uses less digits than its factorization.

21112331300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27741 (or 27734 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21112331300 its reverse (313321112), we get a palindrome (21425652412).

The spelling of 21112331300 in words is "twenty-one billion, one hundred twelve million, three hundred thirty-one thousand, three hundred".