21114342200 has 96 divisors (see below), whose sum is σ = 56734538400. Its totient is φ = 7157821440.

The previous prime is 21114342191. The next prime is 21114342239. The reversal of 21114342200 is 224341112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 39872 + ... + 209328.

It is an arithmetic number, because the mean of its divisors is an integer number (590984775).

Almost surely, 2^21114342200 is an apocalyptic number.

21114342200 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 21114342200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28367269200).

21114342200 is an abundant number, since it is smaller than the sum of its proper divisors (35620196200).

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

21114342200 is a wasteful number, since it uses less digits than its factorization.

21114342200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169569 (or 169560 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21114342200 its reverse (224341112), we get a palindrome (21338683312).

The spelling of 21114342200 in words is "twenty-one billion, one hundred fourteen million, three hundred forty-two thousand, two hundred".