21112233300 has 216 divisors, whose sum is σ = 68167636992. Its totient is φ = 5461344000.

The previous prime is 21112233283. The next prime is 21112233319. The reversal of 21112233300 is 333221112.

21112233300 is a `hidden beast` number, since 2 + 111 + 223 + 330 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14351565 + ... + 14353035.

It is an arithmetic number, because the mean of its divisors is an integer number (315590912).

Almost surely, 2^21112233300 is an apocalyptic number.

21112233300 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 21112233300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34083818496).

21112233300 is an abundant number, since it is smaller than the sum of its proper divisors (47055403692).

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

21112233300 is a wasteful number, since it uses less digits than its factorization.

21112233300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1949 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21112233300 its reverse (333221112), we get a palindrome (21445454412).

The spelling of 21112233300 in words is "twenty-one billion, one hundred twelve million, two hundred thirty-three thousand, three hundred".